The Patriot is very different, including its drivetrain. A Wrangler may have a more similar drivetrain. There are a few Wranglers here - user rgathright for example.
You can search the garage. Click on the "Garage" tab, and "Search the Garage" is in the grey bar under the tabs.
http://www.gassavers.org/garage/search
Liberty gaslogs don't look good, only one has any success beating the EPA estimates and not much success, at that:
http://www.gassavers.org/garage/viewgaslog/1080
I only saw 4 gaslogs, though, so maybe you can do a lot better.