Starting to compile a list of parts/ideas. The tractor is currently stuck with 3 years of failed attempts of un sticking. It also has bearings out of the rear axles. I am thinking a mild stroke with m&w style over bore pistons, or getting custom pistons from ray at extreme tractor parts. I will have the head and block decked to make sure the sealing surface is true. This tractor is a gas burner so it already has the smaller combustion chamber head so I dont think I will have to do much machining but a lot of people have the eyebrows blended back. I may use smaller fly weights in the governor to slightly bring up rpm and better the responsiveness. I want to run 91 octane pump gas and stay away from av gas so the compression will need to stay around 8:1. I am thinking along the lines of 60 hp when I am done. Tractor should still be stock appearing and very competative.