Here is the filter & outerwears you want to run for just about anything but Mud:

AEM Brute Force with internal supports Dryflow #: 21-2059BF
http://www.aemintakes.com/store/product.aspx?Prod=21-2059BF

If you wan to run a different filter here is the link to all of their universal dryflow filters (get a brute force (BF) with the internal support)
http://www.aemintakes.com/search/univcone.aspx

Outerwears #:20-2108  = 5.5 x 6.5 x 12
Call Ron Griffen West Coast Distributor $16.50
Auto Parts Unlimited
Tel:(909)597-8638

This set up works the best so far, no oil and only passes a very fine dust no actual sand granuals

I thought Brett had horrible results when he tried using a dry flow filter in the dunes....