Unless you stay with small tires, the 7 1/4 will give up the ghost- spider gears seemed to break and even kept snapped off lug bolts with L 60 Mickeys back in the day in my 340 4 speed 65 Valiant wagon... put a B body rear in it.... The wagons had a bigger wheel well if I remember- tires stuck out abour 2 inches on each side...