Supertech Subaru STi 100mm Bore -20.5cc 8.3:1 CR Coated Pistons- Set of 4 (Excl Rings) engine The hole needs to be

The hole needs to be widened to approximately 3/4" diameter

Cometic 99-03 Polaris Indy Supersport 74mm Top End Gasket Kit

The intake tube has an attractive black powdercoated finish that's made to last and it accommodates the factory crank case vent hose

23mm (+1mm) Flat Face Titanium Exhaust Valve - Single

high quality and Affordably priced range of 304 Stainless Steel Merge Collectors to help our customers free up maximum horsepower from their exhaust setup

Supertech Subaru STi 100mm Bore -20.5cc 8.3:1 CR Coated Pistons- Set of 4 (Excl Rings) engine The hole needs to beSupertech Subaru STi 100mm Bore 20. 5cc Dish 8. 3: 1 CR Moly Coated Pistons Set of 4 (Use SWF20068 2)