What size radials ?

Alright, so you're ordering new wheels AND tires, correct? Unfortunatey, Im not too familiar with the earlier A bodies but I'm thinking you'll max out somewhere around a 10-10.5" wide tire (section width) at around 28"-29" tall. I believe the front of the rear wheel wells (behind the doors) and the wheel lip on the inside of the quarter panel are the biggest limiting factors, but I'm not 100% on this. I'm sure somebody will chime in.