Well for starters you can pull a front spark plug (clean the plug well first and make sure to tighten with a torque wrench when you put it back!) and see if the spark plug looks like it has 75,000 miles on it or 15,000 miles. The next thing to check is the condition of the accessory belts. Do they look almost brand new or do they look a bit old? Also you can remove the end crossover tube on the intake manifold to see if things look really coked up in there or if there's just a light black coating.
Chances are your car didn't get a 60K. It involves
front end: replace timing belt, accessory belts, crank position sensor (CPS), front crank seal, water pump. The last three are preventative replacements if they aren't failing. If in good shape and money is tight you can try putting those off till 120,000 miles. If you have some extra money you can replace them for peace of mind.
top end: adjust valve clearances, inspect/replace shims as necessary (or replace 'em all for peace of mind), clean sludge and coke out of intake manifold and lower intake runners (in cylinder head. Exposed when the intake manifold is off). Replace spark plugs (replace wires at 120K or if the wires are fouled). Replace spark plug well seals, intake gaskets and valve cover gasket as needed (if damaged or leaking. If not for peace of mind if you desire). Clean EGR nostrils if you have EGR and they are plugged. Clean IAB valve while off the car if you have cleanable version.
As needed or when their time is up (hoses): Replace thermostat, cooling system hoses, temperature gauge sender, ECT sender.
The big things are replacing the timing belt, spark plugs, and adjusting the valves/inspecting and replacing the shims. The other items are important too but the parts add up. It sounds intimidating and the parts can add up to quite a bit of money and it can take a bit of time your first time. However after doing this once at the beginning of September, I actually look forward to doing my next 60K at about 210,000 miles! Good oportunity to see how well things hold up over all the miles that I am finally enjoying.
About that last statement, my SHO is much more enjoyable to drive since I did the 60K. A SHO without the 60K can be robbed of quite a bit of power.
Rick
<small>[ October 25, 2002, 02:53 AM: Message edited by: shojuan ]</small>