Hello. I have a Factory Five roadster with an older Commander 950 TBI setup on a built Ford 351W. I recently bought the HP ECU (MPFI HP ECU & HARNESS KIT, Part # 550-604) from Holley. Spoke to a Holley tech and he said no problem doing it, I'd just have to keep the TBI injector plug, and wire 1 & 2 to the front of the TBI, and 3 & 4 to the back. Can I assume that would be the same as A B C D on the wiring schematic? Thanks in Advance. Brian