im not sure if im the first person to do this or not but I have converted my briggs 6.75hp push mower engine for my mini rally mower. surprisingly it has a 1 in shaft. I have removed the engine break (this is used to shut off the engine when you let go of the lever on the mower the break engages).I bypassed the govoner but don't worry I have used the govoner linkage for a rev limiter. I mounted the coil wire behind the govoner linkage and put a return spring on the govoner. so when the engine over revs the govoner arm pulls back and grounds out on the wire causing the engine to cut out. I like this set up because its unique and I just like the sound of a limiter. tell me what you guys think positive or negative I don't care.