will a 97 v6 dash harness run a 97 lt1 pcm and underhood harness or do I have to change the dash harness and other interior and light harnesses?

both cars in question have identical options. such as power accesories, fog lights, etc.

the abs stuff looks the same on the v6 car as the v8. are there any rear axle abs related stuff that is different between the two?