Do these sleds have the same chassis? My friend bought some pipes for the 1996 MXZ 583 which supposedly fitted on to the 1997 MXZ 670. He tried them but the hood was just a little small and it started to hit. So I have the 1997 MXZ 670 and he is willing to trade the twin Stinger pipes and stinger cans for the can off mine. He also said i can keep the old pipe since i also have the stock can. But should it fit on mine? And this trade worth it? He said if they don't fit we will trade back and he will also give me his DG can for the stock exhaust JUST incase. What do you guys think?