Thats the problem dude.
N/A 34's have depreciated so much in the past few months.
But then again, so has every car.
You could count your losses now and sell it tomorrow as is, and then buy a run-around and cruise in that for 3 years or whatever and get a GTR (will be even less then what they are now).
Or keep it.. and bite the bullet when you go to sell it.