8" Fords will put up with substantial abuse. Lord knows I did everything to the one in my Ranchero that would send a 7 1/4 or a 10 bolt screaming for cover. I did see one break while participating in an illicit street rod activity. '66 Mustang fastback 4spd 289 car, upon launch the spring perches decided they had had enough fun for the evening and detached themselves from housing. Spitting the driveline out on the ground and relocating the pinion angle to a point where the yoke was machining it's way through the floorboards. It was a noisy ride home on a chain for my friends little brother .