I have searched and looked in Adriann's book, but found very little details. It is time to do a 90K on a 93 C2. I know the valve adjustment is required, but what else is must have? I am thinking distributor caps, rotors, and belts, and spark plugs. I will likely have transmission mount done. Has anyone done a 90K service lately?

 

Sounds like you've touched on most of the biggies.

Then, fluids (brake, tranny, motor oil, steering) replacement, brake pad & disk thickness check, oil & air filter replacement,...
ummm...
At 90k+, I'd also be sorely tempted to change out original coils (because coils ain't that expensive for all the weirdness they can display elsewhere.) Oh, and if you're still on your original spark plug wires - and you've got $500+ rattling around in your wallet - a new set would be nice.
ummm...
... and windshield wiper blades replacement.

Of course, the manual also gives words I consider the Devil's own playground: "Visual inspection for leaks: oils and fluids."

 

look at this "famous" 964 forum thread (14,000+ views), covers everything....

100000 Miles service, do it your self.........

 

Thanks guys. Added another 400 miles this weekend. I need to make the appointment today as the car is schedulled to see 5 track days before occasional use over the winter when there is no fresh salt on the road. Oh, and it must be inspected in February.