My intentions are to flash my pcm for the 2002 Express van with the 5.7L and currently my pcm is wired for the 4.3L. I have a subscription to AllData so obtaining wiring diagrams is no problem, but am i able to rearrange the wiring of the computer to match the 5.7L and add a few wires? As long as the wiring at the pcm matches, then the truck should be correct, right? Any help would be great!! Thanks