SBT sells the motor on a core exchange basis. Visit Program Description for further details. This is a Standard SBT remanufactured Supercharged 1630 engine for the 300hp motor.It includes the cases, crankshaft, head assembly, all internal parts & a woodruff key and a 1-year no-fault warranty. See below for all associated parts. Please call SBT for shipping rates*At this time the item you are selecting is sold on a cores first basis, please refer to our Program Description on sending the correct components to SBT. The lead time average for turn around is approximately 5-10 business days. Once SBT receives the core, this core has entered the remanufacturing process and cannot be returned.