Is there a big difference between the 265 and the 295? Are they more reliable? Is it worth the money? Am I just buying unusable horsepower? It sounds like more bang for you buck if you needed your cylinder replated. I race both 250 and 450 classes and my bike does fine as is. But with a big bore kit and a port and polish job I'm guessing it will rip even more?! Or would I be better off going stock and getting it ported and polished?