ok, if u want the tough stance ur gonna have to lose the 19's, chances are they are tempe specials with shitty offsets, i could be wrong, but i doubt it. if u want that tough stance with wheels out of the guards, 18x10 +20ish, 245/45's, modify guards to suit (should be just a roll), done.
19's do not look tough on 33's, they look SXC that ud be NVS of, leave them for the sex spec cars, real men run >18" with low offset.
note: R34 GTR's can pull off 19's, V35's and 350's can pull it off too, but it needs to be done right, a lot of fiddling with fitment to get them acceptable.