at a grand complete and running is cheap for any vmx bike , vmx isn,t about being able to race cheap bikes afterall , i guess u have to work out what u want to race , the 80 kawa is out of evo , so would have to be pre 85 , a long way (4 years )from the yam 250 ,so u would be against liquy cool disc equiped kx,s ect ,what nathan was saying about putting the n model yz back to l spec,s i think was do able , but i,d do the kawa as i think their nice to look at ,parts are always an issue but u learn as u go along , took me a few bikes to work out what to race where are u ? what cat do u want to race in ? pre 85 ?