06 G35 sport edition with the HR motor with these mods
plenum
HKS Hi power exhaust
swaybars
BC stage 2 cams
SPC front and rear camber kit
Injen intake
Headers
short shifter
body kit
20" rims

I plan on doing a tune but want to make sure Ive finished all the engine mods I want first. I have been thinking about a underdrive kit, but everything I've read seems to conflict on whether or not its worth it (with some posts saying it will hurt the engine). Eventually I will probably slap some coilovers on (too expensive right now). Test pipes are out due to California emissions...

Eventually I want to do something crazy and LS swap or VK56.

Does anybody have a recommendation for what to add next?

 

An 06 with an HR motor???
Hmmmmm in for the pics

 

Correction: that's a DE rev-up...