If I remember, back in the late 80's and early 90's they had kits to boost the displacment and power of 250's, wouldn't it be cool to finda a cashed CRF-400 frame, and put a boosted 250 punched out to say, a 350 in said frame? Now Mr. Okiewan, that would be fun!Sadly, Service Honda / Powersports is no more. I'm not sure if AJ is still making these masterpieces, I do know that the company that bought the name "Service Honda" uses it just as a name and website, linking to a standard dealer's OEM store.