Err... No?
If you do it, you must be prepared that whatever you spend you will not get back, and also, as you can see by the number of people saying no, your market is severly limited come sale time, propably making the car worth less than a standard one.
Unless you have money you can afford to throw away, be very careful wth big body mods. IMO, keep them so you can return to standard come resale time.
But of course, you might just want to do it for the hell of it anyway. I did once (and never again to this extent!).
"hello, yes, taxi for one".
