Spare tire area, air tank?

I'm running 37's and don't have a spare tire in the factory location, simply because it won't fit. There is a lot of room under there though ,and I'm looking into and air compressor and tank. I did some searching and don't see any aftermarket setups for installing a tank in that space. Is there one, or have any of you made something to fit there?

 

I used a 3-gal tank from Sun Performance for my OBA system in my '84 4runner. Shaped roughly like a hot dog, it just fit forward of my 33" spare tire. The tank had a mounting flange that allowed it to be bolted to the floor pan with 4 short bolts. It had 4 or 5 fittings for attaching hoses, drain cock, safety valve, etc.

 

NOTE:
When putting a tank under the bed like that - make absolutely positively certain its small enough (height wise) to fit under there without the rear diff hitting it when the suspension compresses.

Also: Remember that your 'bed' is composite. I would not mount it to the composite. You should mount it to something solid (frame rails or cross rail) which may limit your placement (and keeping the diff in mind).

My husband and I installed a small tank under the bed of our Jeep Wrangler. Not a lot of room under there. Custom built size (skinny and about 24" long) which only held 1.5 gallons.

 

The metal "X" brace between the frame rails where the spare tire cable winch mounts to is still there. I was hoping to mount one to that structure. Seems to me a fairly good sized tank could go in that spot, but I'm not confident in making my own enclosure. Even at 110 psi, things could get ugly if the welds failed. It would be nice to find a tank made for compressed air to mount there, I can't think of any shaped like that to use though.