I agree. Do what you want to the car, just keep all the stock stuff so you can put it back should the need arise. They are great cars BTW!
Individual taste... Modding is entirely up to the individual. Personally, I'm a believer that a special production car like the Bullitt should be left as much in tact as possible, although I think performance mods are in order. But again, it is entirely up to the individual owner.
