Jazz, I just finished a 65 Mustang coupe and I found myself asking the same questions. The answers that I came up with were simple, do what it is you want to do. If you are worried what others are going to think about the car you need to remember one thing. It is still a muscle car, and there are paint mods you can do to a muscle car to make it nifty. For instance, I decided that a GT style set of stripes down the center of my non-GT coupe would make it look hot. And it did. Look at some pictures of restored and rodded Mustangs and get some ideas. I found that a good magazine for that kind of info is Mustangs and Fords. Has lots of good info and pics.