I have a 54 GMC PU with a 302 in it. I have been running a TBI system on it for a couple years now. It works very well. I took a complete system off an Astro Van with a 4.3 V6. I took the entire wiring harness out of the van and laid it out on a piece of plywood. Then I took a wiring diagram for the van and cut out what I didn't need. I used the computer from the van as it was. I found an externally mounted fuel pump that is a replacement for the TBI in-tank pump and mounted it on the frame. I got a 4BBL intake from Patricks and modified it by cutting out the dividers in the plenum and making an adapter to mount the TBI out of a piece of 1/2" steel plate. I had to modify the distributor off the V6 to fit the 302. That was the hardest part. I think you could use an HEI distributor with the 5 or 7 prong module if you knew how to wire it up, but I didn't know how. It would have been much easier because I was already running HEI. The only problem I had was a fairly frequent lean backfire. I replaced the 4.3 throttle body with one from a 350 and it works just fine. I guess I may have done it the hard way, but I don't know much about computer systems as far as changing or reprogramming, or about lbs.per hr. injectors or any of that stuff. The best part was that it was all free except the fuel pump and intake manifold. It is also simple--all parts are available from any parts house and diagnosis is the same as the stock vehicle. Oh, I forgot, I also bought a speed sensor to hook up to the computer. Maybe this will help. Joe
