Diablo has a 91 CAI Tune and works nice on my LX Car with my Typhoon.
Not sure about 2007 but an Airaid Modular Intake Tube and a Drop-in Airfilter would cost about $210.00. A good CAI is $350/ In my experience and I've Tried 2 different CAI's in my truck I am very happy now since I reverted back to my Hemi-Hat with a Ported TB at one end and a drop-in K&N at the other. I have a few mods though and with the Oiled Filter I just keep an eye on my map sensor and clean replace as required (Only did that once in 5 years). You may want Oiless Technology like AEM.
If you are just keeping the Tuner and Cat-Back for a while then a CAI might be the route but then again for the same money=Ported TB.
