Depends on what your doing with the car I guess, i think it looks semi lame, as every lancer and his dog has tails like that. but with a few other supporting body mods i reckon id could look schmick.
With the number plate, I figure that anyone that I drive past and anyone who walks past my car can get my plate, so if they get it on the internet its not a big deal.
EDIT: After looking at your car again, i reckon you should do it, and tint your windows to match, put some simple shadow chrome wheels on and itll look sleek.. More pics of car?