I don't know anything about those clutches. I'd get a slightly stiffer one (stage 2 of whatever model) just because it feels better...even if you don't need it to hold 180ft lbs.
As for the short shifters, I think you'll be happy with either. I have the obx...its OK. Definately worth the money but I'd rather spend the extra to get a nicer unit like the b&m, in fact, I plan to upgrade to the b&m sometime in the future.
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