The only modification required to install this kit is the boring of stock crankcases to accept the 3-5/8" big bore cylinders and clearancing the cases for the crankpin The rest of the kit is assembled like a stock rebuild The 96" Hot Set Up yields 96 cubes at a 10.2:1 ratio Kit includes 4-5/8" stroker flywheels assembled with mainshafts and connecting rods, 3-5/8" bore Sidewinder cylinders and pistons complete, a Super Stock cylinder head kit with valves and springs installed, manifold with o-rings and flanges, required hardware, top end gaskets, an S&S 585 cam, adjustable chrome moly pushrods, an HL2T kit, a Super 'E' carb kit, and installation instructions