I just bought this older yz400.. 98' w/ Carbon fiber White bros E series Pipe. Race tech suspension. Protapers. Custom seat for taller rider. i cat on engine. Black excel rims.The gentleman i bought it from is a vet rider .. He has very many connections to the industry of motocross and racing here in phoenix.This bike was taken care of very well.The Engine is tighter and better sounding than any 02'or 03' ive seen and ridden in the past week while on my bike search. It has Tons of pep.. I cant wait to get it on the track!This thing was a rocket ship when i test rode it.. I sold my 96 xr 600 and this is my upgrade.. I know that my tank and or petcok will eventually leak. which it has a brand new one on it now. Any pointers or tips would be great..