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Includes forged pistons, steel H sec con rods and steel crank with 7 bolt flywheel fixings and arp flywheel bolts to suit.This gives approx 25 % more clamp, we have done this due to the very small PCD of the crank to flywheel mounting face. Cylinder block needs boring to suit and some mods for rod clearance, (see picture) We can supply bolt flywheels to suit This crank can be supplied with a std flywheel bolt pattern.