I disagree with this one. You shouldn't have too much into it if you make sure it runs first. Things like chains and sprockets and brake pads and tires are wear items and you would have to spend that money on a bike anyways. For what you paid you can have a very nice dirt bike to play around on for a very good price. Ronayers.com sells factory parts and they have a nice cross reference section that will tell you what years and models use the same part number and if you have a part number it will tell you where it fits. Get it running first and then decide how pretty you want to make it.