I saw a GT-R logo on a maxima one time, LOL! I'm not sure if a GT-R badge or ///M badge adds more HP, regardless it's a minimum of 50HP for either badge.
De-badged looks so much better than fake, you won't fool anyone who knows what any of those cars are, and anyone who is faked out probably doesn't know what they really are anyway.
Better off spending that money on sealed muffler bearings (so you don't have to lubricate them) and synthetic blinker fluid.
1994 Infiniti Q45- First 5-speed swapped Q45.
2007 BMW M Coupe