Suzuki's Jimny is the exact same size as a TJ Wrangler (other than a shorter hood since it's a 4cyl). I've got one on order to replace my TJ since Jeep have abandoned the idea of small, nimble and affordable:
18mpg will become ~40, so no need for another car to actually drive. There are surprisingly few high mileage TJ's out there considering their age and general robustness.