i pulled an 8 3/4 2.76 sure grip out of a 69 sport satellite back in the day. i am not sure if i am correct, but i always expected that the higher (or taller...hee, hee) geared stock third member would likely produce a less strained or "abused" sure grip carrier...and the carrier might be a better candidate to throw in a rebuilder third member without actually rebuilding the carrier.