I just recently picked up a lonestar frame. The previous owner states that this frame is designed to run several different types of engines. Since I already have another lonestar that I plan on putting a sphynx or puma in that chassis. I am contemplating the idea of building a hybrid. If I go this route, it would be easier and cheaper for me to by a complete bike, take what I need and part the rest. So my question is, what is the best year crf450r engine for a hybrid?
Thanks in advance guys.
-Robert