I'm not big on cars, but just recently have come across a 1988 Jaguar XJ-S V12, non convertable. It's the original white with the original red leather interior. The things I want to do are repaint the car to a dark color, I like black, maybe Red or a Silver/Gray. I want to put in a pretty good sound system (not ground-shaking, but good) and definitely a CD player. I want to re-upholster the front seats (they're torn) but keep the red leather color they are. Tint the back windows to a fairly dark color, and get shiny rims on it, the ones on it now aren't shiny at all... Is this bad? I called my dad and asked him about it, he told me it will destroy the value by changing the car so much since currently everything is original. What do you all think? I don't know much about cars so I wanted some opinions. Would it end up looking silly by trying to modernize it (i.e. shiny black color, nice rims, soung system, tinted windows etc)? Or does it not make a difference? Thanks...could really use the help. I was told by a friend that when you get a car like that to hold it and sit on it so the value will go up and it'll become a collector's item...will modifications like those I mentioned destroy the value?