The 2 cylinder engines are available up to 1140cc and the 3 cylinder engines available up to 1500cc. So whatever size fits your style we can build it. The custom engine package includes base, RV cover or reeds, cylinders, crankshaft, head, piston & rings, ignition, miscellaneous o-rings, gaskets & bolts, and assembly. 2 cylinder reed 990cc and 1140cc custom engines, with Rotax ignitions will fit in the Ski Doo Rev chassis. Custom motor sizes 990, 992, 1140, and 1200 are race motors only. The Crank Shop will also build complete TURN KEY LAKE SLEDS, speed, tracks, studding, clutching, modified suspensions, 130+ mph plus sleds. New for 2009 the 4 cylinder sand cast 809 base can also be converted into a 3 cylinder 809 base. The base does not utilize a water pump and is for racing only. The reeds are angled up 7 degrees.