Don't know about your '95, but tensioner and rails can be done on the 126 420/560 for a few hundred in parts and fluids. Much of the parts list depends on the "while i'm in there i might as well..." feeling. This added cam oilers, valve stem seals, valve cover gasketsand several other odds and ends. A good study of the shop CD or alldata will help in looking at what is involved and what else makes sense "as long as you're there". FastLane Phil can help with parts determination as well. He's an execllent resource and the service can't be beaten. (I don't think i'd try to call him New Year's Day though!!
This may not be as much an issue for your model as for the 126 v-8's, so do some searches on yours Tower.