There is a third category a great number of people fall on this site. That is where the car is kept original but is upgraded or optioned out. As an example, my Sprint originally came with hubcaps that have long been lost. Since I love the look of Rallys, that is what I put on. They are stock JCs (correct for the car if they were ordered that way) but they never came on this car. I also added a 6500rpm hood tach that is correct for the OHC motors. Eventually I will also install a tilt column, clock, and maybe some other goodies.
