Found this website. These guys are getting some serious power out of these ole lawn tractors. These guys have abt done everything every which way. Would like to see some of u guys join and get some questions and answers from these guys. They seem pretty knowledgeable. Not sayin the mod specialists on this site aren't. Just a different perspective.

Heymow.com

Sure they get more power out of em, but they're only building them for a quick shot run, then rebuild or replace later for the next run. They're not building for strength & durability.

Yea that's what I was thinking as well. Bt all in all they will know what breaks where at what time and y, maybe not bt maybe some more insight wouldn't hurt. They also have cheap parts in the classifieds