I just ordeded the R2C intake, great deal!! I considered the Injen as well but decided to try something different and the install should be very straight up with the R2C. Either way pricing was on the money for which ever route I decided to go....

Infiniti G35/G37 Dual Intake Components » TunerZ Store, amsoil, ngk, act, tein, cobb tuning, nismo, g35/g37 dual intake

It seems it was best to call the guy or email him and he would give you better pricing than what is advertised on the site.

Can't wait for this bad boy to arrive.

 

If you're overly worried about rain/snow etc., definitely consider the R2cs... the gains aren't as much as the Stillen, but at the same time, the installation is much simpler... you could actually install these yourself... saving you even more $.