Me and one of my friends are always competitve over snowmobiles. I have 2000 dollars to go out next year and hopefully get like a 98 zr 500. Hes trying to sell his 97 EXT 600, with about 4000 miles on it, for 2200. Can he get that much for it?? And one other thing, was there a difference, i mean something that we are gonna really notice betwwen a 1998 zr, and a 2002 zr, both 500's. And would having EFI make more horsepower than a carbed?