Here is a timming belt replacement kit.
CourtesyParts
I would recommend changing the belts and the tensioner as well as the timing belt too. It´s going to be a big DIY job. You have to pull the radiator (and if you haven´t you should do a coolant flush in the processes). Water pump I beleive needs to be pulled and so you may as well throw in a 10$ new thermostat too if it hasn´t been done either.
DIY and save $ but expect it to take a good part of the day.
You may need to check your maint. manual I beleive that you need to do the belt @ 100000 miles
Cheers