The Rock Hard 4x4 jerry can mounts fit 2x2 square tubing. They will fit any 2x2 swing-away tire carrier with the braces welded at a 45 degree angle to the swing-away arm.
Rock Hard 4x4 bumpers have threaded studs fastened to the swing-away arm for use as a Hi-Lift jack mount. Your existing swing-away carrier could probably be modified with a similar arrangement if the tire mount offers enough clearance.
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You can see the wing nuts for the hi-lift mount in this photo. I remove the jack foot when the jack is not in use, which is pretty much always since a hi-lift jack is an overrated offroad tool that should only be used as a last resort when no other jack will do. Mine is almost 40 years old and has been repainted and re-built more often than it has been used. Frankly, the primary reason it is mounted on my jeep now is because the mount was already there so the jack might as well be collecting dust on my jeep as collecting dust in my garage.
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