timing belt broke and bent the valves

you will have to pull both cylinder heads off and have the valves replaced. it is an overhead cam design, but I do not recommend you replacing the valves yourself. It is a big job and you really have to know what you are doing. we had a recall on the head gaskets and were doing these everyday for a year. It was actually easier to pull the engine since its a box motor. Cylinder heads are out to the sides, not on top. The cylinder head bolts need to be replaced too, since they stretch once they are put in. While you are in there you should do the front main seal as well. this is not something you should attempt unless you are a mechanic and know what you are doing. The new valves need to be seated and valve guides replaced as well.