Advice on changing from stock 14 inch rims and spacing

On the wife's '67 I just installed a set of wheel vintiques (sp?) 15X8 Ralley wheels with 26.10 X 10 inch Mikey Thompson wheels. The back spacing of the Ralley wheel is 4-1/2 inches. There is approx. 1-3/4 inches of space from the tire to the springs that are in the stock location.

I believe this to be right about the maximum size considering the clearance left over that may not allow a 15 X 10 wheel because the tire is a little fatter than the wheel.

I can double check the clearance on my own '71 Duster if you like.

Thank you for that info! As long as you haven't noticed any rubs I'd say that was exactly the info I was looking for😄

15x8 is what I wanted in the back and 15x7 for front so now I know I can look for those sizes with 4 1/2 back spacing and be a-ok though with obviously different sized wheels.

Thank you very, very much!