Reply to "wanting to change a few things but need advice"

GoatBeaver,
If you're worried about originality and its effect on value, then don't do anything as others have said. However, if you're doing this for your pleasure and enjoyment, then do whatever your heart desires. In the next couple of weeks, I will be getting my '72 back after a couple of years of upgrades that included an engine transplant (500hp), fuel injection, respray, additional cooling fans, etc., and I will be customizing the interior next. I found that I was unwilling to drive the car very much because if I wasn't starting it every week, it became a pain in the ass to get it started, if the temperature was above 80F, and/or there was stop and go traffic, I was always flirting with overheating, the seats were uncomfortable, etc...I wanted to make the car one that I could enjoy more than the few dozen miles I was putting on it per year. I didn't buy it as an investment, I bought it to enjoy, and I wasn't enjoying it. This was especially true because I have a 600hp Jaguar XKR that does all of the things I want with little effort or planning! I customized that car as well making it look the way I wanted it to. When I first bought my Pantera, years ago, I replaced the brakes with larger, better Wilwood ones so that if I had it out on the track, I wouldn't have to worry. With that improvement came bigger wheels, no longer stock but I didn't care. The Fluidyne radiator and all of the other improvements that will have been made by the time I'm through will have been done so that I can enjoy the car not the next owner. If you've bought the car as an investment, you've probably made a mistake anyway, so go ahead and make it YOUR car.