Help needed! Stock drum? studs on drum? off of different car? 1972 swinger

LittleSlantSwinger said
Is it okay to do 15 inch on front and 14 in back?

It might look a little weird but it shouldn't hurt anything.

I'm assuming you're going to wait to upgrade the rear to the 5x4.5" pattern and just run the SBP 14's you have in the back?