Bringing this up to clarify a few things and what I've learned along the way. To some its old facts but I believe somebody out their may apprietiate the knowledge so here goes.
The original question was directed toward the TJ application. Specific to 3/4 ton disc/drum combo; thanks for previous replies they taught me to dig deeper.
The E350 MC looks like this:
This application uses standard fittings and puts the lines on the wrong side of the MC on a TJ. This MC also requires opening the holes up to bolt on. After digging deeper it generally gets used on YJ swaps. Never personally installed this arrangement but research says its a very suitable application.
Digging found others using a Dodge MC, and some report that the 1/2 ton through 1 ton are generally the same. However this 97 model will not work:
The bolt pattern is off and that was enough for me to move on. No I'm not scared to do a little modifying, just pursuing a better fit. This 99 model 1 ton unit was that fit:
This MC bolts up directly. Its bore is larger and best of all the lines are a direct swap. The only other mod is to the "push rod". It has a fine thread 1/4 bolt on the end which I removed and fitted with a 2 inch long unit. It does have to be ground down lenght wise. Some recomend it to be 3/8 longer than stock. I found modifying the head to fit the bore on the MC was all that was needed and added a jam nut for safety. Simply adjust for no freeplay when mounted.
