Since I started my build on Granny2 my plan has been to go with a Howell injection, and I am still looking very strongly at doing that. However, I am also getting more and more curious as to exactly what would be involved in doing a throttle body conversion using only (strictly) material you would get from the bone yard. Is it even within reason to attempt doing it? I know very little about fuel injection, but I also know there are some very sharp people on this forum so I have decided to start this thread with the hope of learning something new. BTW, I did search the forum and did not see anything else like this already posted. OK... I know you need the throttle body itself. Then, you need the computer, a fuel pump, oxygen sensor, etc. That part doesn't appear to be rocket science. Looking at the computer... I know you can buy a pre-fab wiring harness that's supposed to make the job simple, but my thinking is that if I have to buy a $300-$600 wiring harness then I may as well get a Howell, have all new parts and be done with it. So... I guess what I am looking for is: 1. how many of the wires coming out of the computer will be used? 2. can the extra wires simply be cut off and disgarded? 3. what am I missing, and what else needs to be done? I don't know where this will go, but I'm sure it will be informative.