I'm having an argument with a guy from national moparts about a set of calipers for a 72 newport. I did a drum to disc swap. I sent pictures and one caliper fits fine on the rotor but the other is about a 1/4 inch too narrow. He tells me just install it and bleed it and it'll be fine. There's the problem. I can't install it it doesn't go over the rotor, at all. I told him he might have sent a b body caliper, but he disagrees. What do you all think??