Found this on the google machine. I didnt bother to read it all. IIRC swaps are ok as long as its the same year or newer and all emissions stuff for the year you are getting the motor from is present and working.
What year is your jeep? How do you deal with the charcoal canister and still have KOH legal gas tank vent lines?
NC DMV Registration Guide - In section 1 capter 7 states:
"Motor numbers are the numbers assigned to identify 1953 and older model vehicles. Ford, Studebaker, Lincoln
and Mercury vehicles 1953 and older were assigned a serial number to identify their vehicles. Prior to 1954 the
primary identifying numbers on V-8 Ford, Lincoln and Mercury automobiles were located on the frame and the
changing of a motor would not affect this number. A change of frame would necessitate a correction of title. 1953
and older model vehicles registered in North Carolina are titled showing the motor and the serial number of the
vehicle. A change in motor affects the vehicle identification number.
1954 and later model vehicles are registered by a serial number. A change in the motor would not affect the
vehicle identification number. The brand “Motor Change” will be shown on the North Carolina title.
The certificate of title follows the vehicle and not the motor. A certificate of title is not issued for motors only. A
change in the motor for 1953 and older models would require:
1. North Carolina title in the owner’s name for the motor removed
2. MVR-5 (Application for Correction of Title or Substitute Title)
3. Inspector’s report indicating changes made in changing the motor and verification of motor numbers
4. $11.00 title fee
5. Title in the name of the owner for motor being replaced or file an indemnity bond for the vehicle
A Corrected Title Is Required When:
1. Installing a New Motor G.S. 20-69, 70
a. Motor with existing motor number:
(1) Form MVR-5 Application for Correction or Substitute Title
(2) Certificate of Title in the name of the owner or file an indemnity bond
(3) Bill of sale for replaced motor
(4) Inspector’s report
(5) $11.00 title fee
b. Motor without motor number:
(1) Form MVR-5, Application for Correction or Substitute Title
(2) Inspector’s report
(3) Certificate of title in the owner’s name or file an indemnity bond
(4) Bill of sale for replaced motor
(5) $11.00 title fee
After title work is received, motor number will be assigned to the vehicle and Form MVR-101
(Assignment of Special Engine Numbers) mailed to the inspector. The motor number with a prefix of
NC will be stamped or cut with dies into the engine block in a legible and workmanlike manner. The
inspector will inspect the vehicle and verify that the identification number is intact.
2. Installing A Used Motor G.S. 20-69, 70, 109
a. Install motor with existing motor number
(1) Form MVR-5, Application for Correction or Substitute Title
(2) Inspector’s report
(3) Certificate of title in the owner’s name for motor removed
(4) Certificate of title in the owner’s name for replaced motor or bill of sale
(5) $11.00 title fee
b. Install motor without motor number
(1) Form MVR-5, Application for Correction or Substitute Title
(2) Inspector’s report
(3) Certificate of title in the owner’s name or file an indemnity bond
(4) Bill of sale for replaced motor
(5) $11.00 title fee
Motor number will be assigned to the vehicle and Form MVR-101 (Assignment of Special Engine
Numbers) mailed to the inspector when title work is received. The motor number with a prefix of NC
will be stamped or cut with dies into the engine block in a legible and workmanlike manner. The
inspector will inspect the vehicle and verify that identification number is intact.
Motor numbers which have been altered or removed will not be registered in North Carolina if there is theft
or fraud involved. It is a violation to alter the manufacturer’s engine or serial number or other
distinguishing number or identification mark of a vehicle, nor shall any person place or stamp any engine,
serial, or other number or mark upon a vehicle unless a number is assigned by the Division."
"
NC General Statutes - 20-70:
"§ 20‑70. Division to be notified when another engine is installed or body changed.
(a) Whenever a motor vehicle registered hereunder is altered by the installation of another engine in place of an engine, the number of which is shown in the registration records, or the installation of another body in place of a body, the owner of such motor vehicle shall immediately give notice to the Division in writing on a form prepared by it, which shall state the number of the former engine and the number of the newly installed engine, the registration number of the motor vehicle, the name of the owner and any other information which the Division may require. Whenever another engine has been substituted as provided in this section, and the notice given as required hereunder, the Division shall insert the number of the newly installed engine upon the registration card and certificate of title issued for such motor vehicle.
(b) Whenever a new engine or serial number has been assigned to and stamped upon a motor vehicle as provided in G.S. 20‑69, or whenever a new engine has been installed or body changed as provided in this section, the Division shall require the owner to surrender to the Division the registration card and certificate of title previously issued for said vehicle. The Division shall also require the owner to make application for a duplicate registration card and a duplicate certificate of title showing the new motor or serial number thereon or new style of body, and upon receipt of such application and fee, as for any other duplicate title, the Division shall issue to said owner a duplicate registration and a duplicate certificate of title showing thereon the new number in place of the original number or the new style of body. (1937, c. 407, s. 34; 1943, c. 726; 1975, c. 716, s. 5.)"