I had to do the same thing to my 99 2.5L I had to wedge a big screw driver(a friend helps too). They should have pullers at oreillys or autozone. While you're in there, might as well change the water pump too. Also, try your best when you're putting the timing cover back on to get the bottom oil pan gasket back in place. Your timing kit should've come with a new piece for it. But if you mess it up ( like I did) you get a leaky oil pan. I'm putting on a new gasket next week. Good luck and jeep track of the bolts.