Doing a home port on my ihi and the shaft has enough play for the stock wheel to rub the housing. Figured I'd rebuild before it ate it's self. Wheel is just a 6+6 kgb billet (friend tried one and liked results, plus they'd ship to California) figured it'd be better than stock. With the new injectors, head bolts, head gaskets' and fed heads, it should run a bit better.