yeah if nothing is wrong with your clutch, I'd do the upgraded differential. Will definitely give you more performance with shorter gears and laying down the power versus a lighter flywheel. These cars are incomplete without a proper diff anyways. But remember, with shorter gears you'll have more problems with higher power down the road..
__________________
'15 370z Nismo Tech 6MT Magnetic Black, V2 BP Kit 6467 Unexploded Turbo | '06 350z Touring 6MT Carbon Silver
|