Wheel bearings - check 'em. If there's too much play replace.

Suspension - check all your ball joints, etc. Replace as needed.

Brakes - Some people rebuild each year. I went three years without any issues. Your mileage may vary.

Motor - Change the oil. Check the oil pump. Dunno, I haven't done anything to mine other than oil changes since I got it. I have a top-build motor, though. Tristan has a built motor for sale in the classifieds if you just want a motor.

Transmission - Put in some good gear oil. There's been a couple discussions on what people use so do a search. Mine works fine after several racing seasons.

Differential - You need a limited slip if you don't have one. The Nismo clutch type are the way to go. Put in some good gear oil and change it once or twice during the season. The diffs get pretty hot.

I do a once over at the beginning of the season, change all the fluids, and call it good to go. I replace things as needed.

David