My '97 B/W GTS is pretty close to stock. I've had the urge to mod the heck out of it, but I keep thinking back to my highschool days when I just bought a very low mile and all original 455SD Trans Am. That was a fine handling car and it looked great, too. So, what did I do? Within one year of owning it, the whole thing was apart and I replaced: carb, intake, heads, crank, cam, pistons, ignition, headers, exhaust, radiator, suspension, sub-frame, rear end, wheels/tires, transmission (Doug Nash 5-speed), installed welded-in roll cage, removed power steering/brakes & A/C, installed racing seats, removed rear seat, etc. Long story short - it was 'kind of' fun to drive after all of that, but now I really wish I had left it stock. It kills me to think that I paid $1500 cash for the car, it only has 73K original miles now, and if it were still stock it would be worth twenty times what I paid for it, easy.
Thirty years later, I still have it in my garage, by the way - that's going to be a project car one of these days.
Even after almost 11 years since I picked up my Viper, every time I look at my GTS I'm overcome with an awe of how beautiful a car it is. I'm really glad I left it pretty much as it was from the factory. Now, if I happened to come across a low-mile older GTS in a color other than Blue/White, I might just be tempted to make it a beast...