How much is a tune up for a 1987 Porsche 944?

It really isnt too bad. Im getting ready to give my 944 a tune up and it consists of new plugs (5 dollars a piece) new plug wires (75 dollars a set) distributor and rotor (about 60 dollars) Air filter (i bought a K and N racing filter for 45 dollars) and thats about it. Of course you should flush the coolant system and add new coolant. Change the oil and filter which is cheap and easy to do. This will do wonders for the engine and make sure you save all your reciepts and dates they were changed to pass on to the next owner that would want to buy it in the event you go to sell it. Hope this helps