Rebuilding your crank will require (2) SBT Part # 23-304-106 and (1) SBT Part # 23-304-106A rod kit.
SBT Part # 23-304-106 kit includes the rod, big end pin, big end bearing, 2 end play shims, and wrist pin bearing. Used on the magneto end and center cylinder.
SBT Part # 23-304-106A kit contains the same components but has a longer big end pin for the PTO end of the crank.
SBT recommends rod side end play of .018 when assembling crank.