biggest tire that can fit in minitubbed a-body?

heres my car-70 dart , tubs moved in flush , lips trimmed flush , springs moved in.

rear is moved back 1.5"

15 x 10 welds w/ 7.5 bs

hoosier slicks 29 x 10.5 . these are about 13.5" wide at the sidewalls when mounted

for a 29 or taller you will have to either :

trim the quarters at the front

or move the rear back


unless you have a narrowed rear that tucks the tires under the wells real good

I've got the exact wheel and backspacing.

The only thing I have different is my forward portion of the rear wheel opening was massaged forward 1.5 inches and blended in to look stock.

Otherwise the wheel is so close to the wheel opening it looks kinda cramped.