My 91 Z28 vert doesn't need a lot, I just replaced the heater core a couple weeks ago. I also replaced the pass. side window motor, and have to do the driver's side yet.
My 88 TransAm GTA on the other hand...has low oil PSI and knocks. It only had about 30k miles on a rebuild, so I'm gonna pull it out and rebuild the bottom end of it. It currently has TPI, and was converted to the 91-92 MAP management system. It will be a carb'd 305 going back in, Holly 600 CFM with an intake I have not yet decided on, and a pretty big cam for it to get that lopey idle and more power. May take the original 0416 head castings and port them out and add bigger intake valves if possible. Trying to do this on a REAL budget, not the fake ones car mags seem to always have in them, hey build this 400hp 350 for ONLY $3K!!! Yeah, like everyone has that lying around to spare. The carb was $20 from my neighbor, the cam/lifter kit is $90 through Summit, along with a 2 piece timing chain cover, the timing chain is a Zoom! piece that I got at a swap meet for $20 new. The distributor will likely be a reman or used one. I have a set of blue Taylor wires on my cert, they are there cuz I got them for free at a yard and are fine. May swap out the stock replacement wires on the GTA with the ones on the vert to get better ignition in the GTA since it will need it and the Z28 is all stock.
That car is gonna be a screamer when I'm done. And it's a 5 speed, which makes it even more fun. Coupled with the GTA digital dash and t tops, and I'm gonna have a lot of fun with that car....once the motor is fixed and built.