1st, I tried the search feature...no results. What I have is a motor swap-out on a great dane super surfer. Picked it up cheaply, but the engine is bad. Got the exact replacement engine over the internet. The machine is 52". The engine is a kohler 18 hp. The replacement engine is the same. The shop said to be sure...or the electric engagement for the blades would not fit. Also, they said to watch out for the set-up of the governor controls. I have all the books...the owner's manual and the mechanic's manual for both the machine and the engine. If I go exactly with the manuals, does anyone see any future snags that I might run into. I am very mechanical, for the average individual, and have more tools than is needed. I just wanted to post to see if anyone has been down this road, and any difficulties that they might have run into. I am very confident in my mechanical abilities, and feel good about the whole project. Just was looking for anything that I might want to be fore-warned about. Thanks for any and all advice that everyone might be able to offer...JIM.