check your owner's manual, it lists exactly what needs to be done. i think at 50k all u need are new plugs/wires, tranny fluid, coolant, valve adjustment, and air filter.
don't waste your money on plug wires! i have the OEM wires that say "1991" on them... on my 1991 teg. they work like new, i even bought new aftermarket wires put them in and noticed no difference. needless to say i returened the wires and stayed with my stock wires. btw, they have 194xxx miles on them.