As these cars get older the available pool of future buyers is inevitably shrinking. Thus I would have to comment that maintaining and enhancing its originality is going to eventually have a lot more appeal to a buyer than a modified car.
If your car is still factory original then why change it? All you are doing is starting a downward spiral of devaluing the car. Sure, if it's already modified and you like that then by all means keep on personalizing it to the way you like it. But we only have to look at the high value auction cars to see that the unmolested originals are the ones that return the highest dollar.
We all say "I'll never sell that car" but without question, one day
IT WILL BE SOLD and an original car is always going to be easier to sell than a modified version
Just my opinion anyway
Ian
