and you're at 180k so if you're going to do cams or even take the head off the timing belt's gotta come off anyways so BUY A NEW TIMING BELT! while you're in there you might wanna do the water pump too but with 180k i'd definately do all the oil seals, like cam, crank, balance, etc. on, seals are cheap and you'll be pissed when you do the other stuff and you're leaking oil from them. just a suggestion.