Rebuilt 20hp Onan engine with 1 1/8" crankshaft. $1200 with good complete core. Can be converted to 18hp by switching out the carburetor.  Should fit for most applications. Comes with 90-day short-block warranty. Please call (989)220-5432 with questions or to schedule a time to come & watch it run. Local pick up preferred or will ship to U.S. addresses at the customers expense.