Look into an S&B Intake for it. i have one and love it, even on the 6.7

 

I have the Kore HD levleing kit on my 07. It comes with new coils not just spacers, Bilstein shocks, and sway bar drop blocks. So far I have been very happy with the kit. I installed it in about 2 hours in the drive way ( with air tools). I would buy it again in a heartbeat.