AC Wiring harness vs. Non-AC Wiring harness

I have a temp and oil pressure gauge mounted under the dash. Much more accurate than the crappy original ones. That is easy. If you are replacing the dash there is a lot of good info here.

I tend to agree. Just for what the car is, and the investment in the engine, I just want to make sure (best I can anyway) the information in front of me is accurate. Went with a full gauge package replacement so I suspect there will be a fair amount of changes made but would like to utilize as much of, or tie into best I can, the multi-pin connector where feasible.