This is the best mod for spirited driver once a while
[ame="http://www.youtube.com/watch?v=rXz7lJhlFC0"]Initial D AMV : AE86 vs EK9 - Forever Young HD "ON" [720p] - YouTube[/ame]
& put other Ini-D OST and blast it! It'll give you 20hp (in your mind) & you might able to do in-air hairpin jump!
On serious note... prob for me, brake pad upgrades