I'm thinking about doing some mods to the engine, more along the ways of porting and polishing. I know that it works on cars, but would anyone recomend it? I got a 98 polaris XC700 SP that got some rip, not alot, but I want more. If I get it ported this summer, how much would that run, or should I have i have the bore oversized? I've heard this before, but how reliable doe the engine become and is work the money for the job? everywhere I look, I see porting jobs for $1000 and more. Is that normal? Could I bring it to an automotive engine specialitly shop, and have them port it out? what should I do? I wanna woop my friend next year, but I don't want that much notice out the outside that he can tell, basically, I want it to be a sleeper, then when I rip it open I wanna leave him in the dust, well snow, since there is no dirt on snow, unless its brown snow, and brown snow ain't no good.