Thanks Dave. I just hope I don't sound too ignorant lol. My tbi swap consists of a setup out of a 94 c1500 350/4l60 e ecm 7427 & harness. I want to install this set up in my 72 k5 350/5 spd. What problems will I run into? I had a Holley projection(analog) setup on my old 69 c10 a couple years back,it was a definate improvement over the quadrajet, but had its problems also. I could never get it tuned quite right, but like I said it was still an improvement.