if you are looking to get it resleved look in back of moto-x action or dirt rider. there is a place that did my 91 yz250 called Kustom Kraft. Re-sleeved cylinder with borable sleeve along with wiseco pistion and rings matched to sleeve and top-end gasket kit(everything you would need for a top-end rebuild) for $250 w/shipping. took about 2 weeks total there and back. your bike would prob be in the 200 range since its a 80. other wise a bore job shoulb be about 35-40 plus 80 for piston rings and top-end gaskets. labor is 55-70 hour and could take 3-4 hours.