I currently have mine under the driver's seat, but I like some of the other ideas listed here as well. I my give one of them a try.

 

I put mine where everyone is putting the evap canister, I cut a side out of a peice of 2x4 " rectangle tubing and mounted it on its side with the opening to the back. I ran the fresh air into the back corner of the tub, so it can get wet and be submerged.


I bolted the mount to the floor, I cant find a pic of it done now, but it works so far.