You won't need to cubes as the answer was already posted in another thread in this forum. If I had forced induction I would be pulling much more than what I have now. If there was no insurance, drivetrain complications, or warranty issues then I would get one now. I have to wait 2.5 years before I would be serious about it.
Yeah it's a photochop courtesy of one of the skyline images I stole from this forum