Need help perfecting the budget build hemi swap

I started a thread writng about instrument cluster, and gauges. Why some work, and others don't. The answer is probably that you really have no idea when you buy a used car.
I found a set of gauges at Summit Racing. Autogage ATM - 2391. They're 1.5" electrical gauges, with sending units. They're just a very basic - temp, volt, oil pressure set. That I think can probably be grafted into the stock dash, without having to worry whether the headlight switch will impede my attemps, and they're cheap. So I can remove the ammeter, and temp gauge that came with the Plymouth, but keep the dash panel. That's good enough for me.