Yeah people get blinded by things like 240cc motors and stroker cranks and all these other modifications and they don't realize how bad their little 195cc's are being choked by a poor port design. Porting not only makes the ports larger to flow more air, but mobifies the port timing, allowing a builder to make your bike have the exact power characteristics that the customer wants. There is no better power enhancement than a good port job. once you can inhale (filter, carb) and exhale (exhaust) more efficiently. A 240 kit without porting is like having a Corvette Z06 with cams from a '91 camaro RS.