If I was looking to do what you want to do I would look at craigslist for a old $50-$100 garden tractor that has a good engine maybe something MTD and swap out the engine. MTD shares tons of parts with lots of mowers so if you find one that is close to yours you with have a donor tractor. You can find which tractors are the same by checking on a online parts store like partstree.com and put in you model# or what ever and you should be able to see other models that share part like yours. You don't have to worry about what the hood/fenders look like, you need to look at the frame/axle/steering parts of your tractor and the donor tractor. This will work for the tractor but does not help very much with engines. MTD makes their mower/tractor so you can install lots of different engine, 1 or 2 cylinder engines and most of the wiring will just plug right in. If you find a tractor and are not sure if it will work, just take some pictures and write down the model# serial# of the donor tractor and post them on this forum and we should be able to say if it will work. Good luck. I hope I am making sense to you.