I consider my car to be a survivor. As near as I can tell most of the metal is original, and the engine and trans are numbers matching. If I do have to replace something, I want it to look correct which usually means original used parts in good condition, nos parts, or reproductions. So I guess I am slowly taking it back to stock. But I have no plans to change the paint for as long as it holds up. The engine has had a number of aftermarket additions (air cleaner, intake, carb, headers, alternator, etc) but as long as it keeps running well I won't be doing any major work to it. On the flip side of the coin, I won't be doing any major modifications like adding a Shaker or dropping in a Hemi.
Most of the work I've been doing is replacing pieces that were missing (hood insulation pad, four barrel logo) or broken (clock, antenna). The radio is the only thing working item I removed and took back to something near stock. The pioneer cassette deck just looked wrong. It was a giant silver block where the radio should be. If it had looked better (and was wired better) I probably would have left it alone. Price became an issue when looking for a replacement. Reproductions with iPhone/iPod support were too expensive, buying a good used one was actually the most affordable option. I suppose I could have shopped around for an aftermarket one that had a good look, but then fit/mounting could have been an issue.