Has anyone with a 6X Mustang installed a painless engine wiring harness on their car when swapping to an EFI 5.0L ??? Wondering how much it costs and how hard it is to wire up. Looking at purchasing a 1967 Mustang with a 1994 GT 5.0L and AODE tranny in it. Has a hacked '94 GT harness I just want to do it so it looks right and there are no extra wires in there. Thanks.