If it is the blade I think you will be very disappointed, no way in hell it will run 65 mph. About 3 years ago I bought a blade with the thought of "lets see what I can make this do". Dropped about $800 into the engine, big bore kit, high compression billet head, full circle stroker crank, billet reed cage, black widow reeds, delorto carb, pipe from badazztoys, performance 2 shoe clutch, and the list goes on. After all that it would run right under 50 mph, impressive as hell for a "weed eater engine" but very expensive to get there. Sold it for $150 after it sitting for 2 years due to lack of interest/disappointment in the project.