I'm in the market for a new bike, I have a list of three I'm checking out tomorrow. '02 YZ250 w/ minor mods. '02 YZ250 Ported, Polished, carb work, aftermarket reeds/cage, pipe exhaust, etc. This bike was an EBR project apperently ( http://www.ebrperformance.com/main.htm ) and many mods were done. The first can run on '93 octane pump, but the second has always been run on a 110/93 50/50 mix. Jetting aside, can a bike with porting/polishing be run on pump gas? Once this is done is the bike forever going to need the higher grade stuff, with the exception of putting a stock can and head back on? Both bikes are very clean, the 2nd is a little bit more but nothing I cant swing. Both owners give me great impressions and a thourough inspection will def. be done before I buy. But if I have to buy 110 the 2nd is most likely not going to happen. Figured I'd ask.