I am looking to put a CAI on my '05 4.7 QC 4x4 and was wondering what to look for and if brand matters at all. I looked at some K&N's but $350 is out my price range.

 

I just installed a AEM Brute Force CAI on my truck. It looks great and the bolt up fit like a glove. The best thing I like about this CAI, the filter is synthetic. It does not require oiling, and it filters just as good as one that requires oiling. I got mine for 254.00 and it included shipping.

 

brad- do you have an exhaust or headers on your truck? The CAI won't do anything for your truck by itself.
Go to K&Ns site and click on the one yer lookin at, it'll give you the dyno stats, the 5-8 hp gains are generally around 3,500-4,000 rpms.