i have a 94 ls, with a little over 170000, i plan to swap out the clutch 1st of all, and ill have my mechanic check everything else, but what can u guys tell me about what to look for? what are some parts that will probably need to be swapped out to insure that it'll be running for a while?

so far i know of the clutch, and to check the CV boots/axles and such, what else? btw the engine is in really good condition.

also what is the difference between a cat-back exhaust, and i guess a normal one, and if i buy a full fat back exhaust, do i still need to also buy a high flow catyltic-converter?