Hello, Starting from scratch here. Building a '70 Blazer with a 454/4l80e/203/205 setup. Tranny is a 1995 4l80e 4x4. Currently have a standard Q-Jet and manifold on the 454. Looks like the throttle bodies and intake manifolds were used for a number years, so that's easy, but several different computers were used. I do not have access to a donor vehicle at the present time, just the local salvage yard and the online sales sites, so, what computer would be best for the setup and if sourcing a stock wiring harness, would you need one out of a truck with a 4x4 4l80e, or would it be better to go with a stand alone such as those made by Howell or LS1 Wiring Harnesses. Thanks for the help, I'm sure I'll have more questions as I dig into this, but have to get the parts first.