click for image
I have the same car (called 323F in Europe), but I couldn't find a proper picture and the car is very dirty right now to use it as a model...
anyway, I never put anything on my car that is not standard, no decals, no vinyls, no nothing... but... but I would put a LFS sticker (a metalic one, for instance, would be nice), even simpler than the one I just photoshoped into the rear of this car's picture I found online...
that also would send a notice for those hot rods... "I won't race you here, meet me in lfsworld!"
I have the same car (called 323F in Europe), but I couldn't find a proper picture and the car is very dirty right now to use it as a model...
anyway, I never put anything on my car that is not standard, no decals, no vinyls, no nothing... but... but I would put a LFS sticker (a metalic one, for instance, would be nice), even simpler than the one I just photoshoped into the rear of this car's picture I found online...
that also would send a notice for those hot rods... "I won't race you here, meet me in lfsworld!"

I'd probably get a sticker for my car if they came out too. I agree about the clothing though, for some reason I don't think I'd wear one 
Bumper stickers too if I had something to stick 'em on (random cars.. free promotion! 