So there is a farm that I have done a lot of work for over the years and as a result I have been given hunting and wood cutting rights on the farm. Their old 6x4 Gator has had a sick engine for a while and it finally seized. So they were out of the Gator and the farm manager uses it a lot. And I use it when cutting wood both for myself and the farm. I said let me check something's out and see what your options are. A new proprietary engine is $2600. Well I found Small Engine Warehouse, and they make bolt in kit using a 23 hp Vanguard engine for $1700. So the farm manager bought the engine and since it was a rainy day and I couldn't work outside I put the new engine in. Old John Deere exclusive Yamaha. New Vanguard. Gator back together. I had two issues with the install. First, the primary clutch is a bear to get off. Second, the idle was too high when installed, I finally realized that there was a tab I could bend out of the way and then the idle was perfect to allow the clutch disengage.