Introduction pricing is 4k for a complete ready to bolt in 937 4mil. They use cr 500 pistons and wrist pin bearings so they are readily available. First bore is 898cc so they are am legal. All you need to supply is a set of 62t cases and a core crank. All cranks are stroked, trued welded, and all assembled with high quality koyo bearings. Options for both pump and race gas versions. These engines are the limit of what you can get out of a 4mil. Heavily ported and epoxied cases and cylinder porting to maximize quick hit and the ability to pull to the moon!