my mods are a stock welded crank, 28mm pwk carbs with K&N`s(I want to keep these for some low end unless the crank will make up for it if i go to a 33 or 35mm carb, Sandtrax MX style porting(which will work with the stroker crank) vitos pistons, stock modified reeds, CPI`s,cool head, 17cc domes, 225lb. compression. 111 octane race gas, makes 67hp 37ft lbs.