Problems Identifying and Matching up new Brake Calipers

So what's the beef? The 73 and up A body brakes are arguably among the best. Just clearance the calipers and rock on. 15 minutes work with a die grinder. They aren't hitting all that much.
That is what I will now do.
But, I didn't get that advice until I talked to the guy at the Chrysler Nationals this past weekend.
Shipping the expensive stuff back to Summit Racing today.