no "kits" avalible. tear it down carefully inspect the crank,rods and bearings. I always replace the bottom bearing but the rest are ok to reuse if not damaged.
inspect the rods.
bore the cylinders and replace the piston assy's.
use new gaskets carefully inspect or replace the exhaust divider plate.
inspect the shift shaft for rust while the power head is off.
Thanks man, I could not get it to idle rite, pulled the plugs,found water on # 3 ,coming from inner exhaust gasket, just starting to score #3, going to install new pistons & bearings