You may could fab one up on your own. Have never seen a commercial version for sale like you want. All I have ever seen is external, sets on top or in front of bumper.
Keep in mind, there is not a lot of room behind bumper!
Some of the UTV winches are pretty compact but have decent capacity.
You may can find one of them that would fit, but would still require some hand built brackets for mounting.
The Warn on my Polaris Ranger is a lot tougher than I thought it would be. Pulled some real heavy loads with it.
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Supporting Vendor and Moderator of LOST05 Jeep Liberty CRD Limited
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