Frankly, both. I don't think I'll recover a cent of what I put in, and, because my car is highly modified, my audience of buyers is very small.... I would think it's the rare buyer who actually seeks to buy a car already modified, let alone an nsx that is modified. In addition, because of the modifications, it's been repainted a couple of times... I mean I would think most buyers want original paint...
maybe I'm wrong....
a good example is Bill's car ("mynsx") - after all of the mods on his car, and the relatively low miles, he is selling it for a far lower price than what he put in.
I mean, I suppose this example may not be entirely analagous, but if I'm buying a ferrari, I want the original. I would want tubi exhaust and some other options on the car, but I wouldn't want after market type stuff. (As far as I know, the tubi exhaust is an option on ferraris.)