This is a great engine for the $ and can do well if tuned right. These engines like to be run warm so do be afraid to run them 250 - 260. Brian Kadow runs upfront every time he races with the Dynamite/Sportwerks engines. They do not have alot of bottom end but they do have alot of top end. The Dynamite .007 & .053 pipe both work well with this engine. MC59 also is a great plug and can save you a few $$$,s. You do not need to shim the engine for 30% just make sure you do the heat cycles to break it in. Get the engine up to 200 deg before you ever start it and you will be fine.

Good luck.