atc 250r

[2fast]

ok, i am looking to build a 86 or 87 250r from the ground up.
how hard would it be to put a late 90's cr 500 motor in?

[400exc]

It sounds to me like alot of modifications to get that motor to fit in there. But hey, if you got the time, go for it!

[250R-Dee]

You need to ask this question on the 3wheeler specific sites. There are a couple ATC500R's on both sites. Just use "3wheeler" as your search world in google.

Here ya go (http://www.google.com/search?q=3wheeler&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1) .... I did it for ya.

[2fast]

yea! it does sound like alot of mods. thanks for the info.