i have the SPEC clutch, stage 3 though, i like it alot, but i need to replace it soon. i got about 45k miles out of it, and most of those were hard miles so i can't complain, after all, its a segmented racing clutch and not really desigened to last as long as a stock one. But i'd recommened the SPEC for a ls1, my new clutch will be a SPEC stage 4 or 5.
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