What do you call the guys that complain about non stock cars?

if you don't like someone's style on a car......buy the car and change it.

i bought a car (72 demon ) and i think what the previous owner did to it, is horrible. (blacked out grille and aftermarket wheels) but all i can do now is change it out and move on.

cars are as diverse as the people who own them so shouldn't really matter what people do to their cars, just worry about your own.