Wheel and Tire Help... 65 Barracuda

What I am doing is:
65 Barracuda
8 3/4 rear
Cragar s/s
14 x 6 up front 4 inch? back spacing
14 x 7 in back 4.125 back spacing
going with BFG T/A's
What is the recommended size for this set up?

Thanks :prayer:FABO