It's hard to put a price on sentimental things so you probably got a good deal since it serves 2 purposes for you. And if the current trend continues, the market will climb past your price. Personally, I would get some pictures of the car with the original owner and have him sign some form of "verification" you type up saying he bought it new and it's a real Z28. It can't hurt the value, that's for sure. I bet when you show the original owner the car he will love it! This is what the hobby is all about.
