probably cheaper changing the motor than rebuilding it. if you are from canada, i am using the kijiji.ca website witch i find at least 2 or 3 tracker/vitara for under 800$ each month,and they are running but with bad body and sumtimes with no 4x4 working( usually just a wire or an air pipe leak). i bought two last january for 900$ on kijiji.ca, both 2002 with the 2.0L i got one on the road and i have keeped the other one as a part truck. if my timing chain breaks im replacing the motor, its just so small and not enough of an pain in the ass to change it than messing around the internals.