I have been working on a quad I got it is a 2000 yamaha banshee frame with a 82 yz250 engine that has been bored 1mm over, the ports have been polished, and I am working on a tuned pipe for it. Picked it up for $200 and put about $200 into it but it is pretty much good to ride. And might have found and origonal engine for it it's just a basket case that has to be reassembled but I'm fine with that.