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Just some things off the top of my head...Tranny fluid, rear-end oil, plugs (don't replace w/ factory ones), wires. Has the water pump or opti been replaced? Good time to fix any leaks or replace gaskets. Drain and flush radiator. Bleed brakes if not done recently.
I was told that from two shops...the Vette dealership I purchased my car from, and a mechanic that does only Vettes. Both said that the tune up should have been done at 50K. Boy do I feel mislead.
I did just recently have the fuel filter changed...and that made a slight difference in performance. I have been quoted $450+ for a full tune up.