74 Duster wheel and rim sizes.

I have run 225 60 15's on the front of 3 different A bodies on the 15 x 7 cop wheels, all 3 cars that size rubbed on one side or the other until I moved the fenders around. I would say a safe bet would be a 215 on the front.

Usually, the bottom corner of the front fenders can use a little trimming.
Simple stuff.

235/60-15 all around. 15x7 Mopar steel wheels.