i have seen rears go on street tires with about a 3k clutch drop. i also have seen them live behind full slicks and not fail. luck of the draw i think. mine lived happily behind a stalled auto and cut some 1.6x and 1.7x 60 foots. if you rebuild it, make sure its done right, it should hold up to moderate abuse, but its not gonna stand to many clutch drops.
01 SS Rally Red A4 #4987, 04 Yukon XL Denali, 99 Cadillac STS-SOLD