so are you wondering if it will fit ? i have 235 60 15'' with a 4 1/8 BS on my 66 with stock axle an tubs. its tight doesn't rub but i have to let the air out of the tires to mount or remove. also this is on a 66.
Do it! You’re ride will look awesome. You might have to mini tub it, but you might be able to get away with just moving the leafs inwards. I mini tubed and relocated the leafs and running 255s with no issues. 275s will also fit