I am planning to install 4.3 Vortec v/6 and a 700r4 trans. in my 51 pickup that I removed from a 92 astro. I also kept the computer and all the sensors. I ordered a new fuel injection wiring assembly from "PAINLESS" made for the 4.3 v/6 from "JEGS"
Paid approx. $369.00 in April 08. Someone on Ebay was selling the same kit for over $500 also found other suppliers with much higher prices. I went online to the PAINLESS site to make sure I was getting the same kit. Anyhow "JEGS" had the best price & yes it is the exact same kit. "PAINLESS 60201" Good luck and I hope this can help.