I just got my new bed mount, fuel tank today, minus instructions. When I called CPP, they said it ws pretty straight foward in plumbing it and mounting it. The tech guy said to put the smallest K and L air filter I could find inline to the vent port, mounting it higher than the gas tank. So I was wondering if any of you have been there done that and could recogment a part # of a air filter you used. Thanks.