2000 TJ, so no latch system. We used the Chicco Keyfit system for a little while in rear facing mode. We now use the Chicco Myfit forward facing. Both were placed it in the middle of the rear seat with the seatbelts cross fed through the seat or base. The extra room between the front seats was needed for the rear facing, and is still nice with the front facing. Kiddo crawls in and plops down in her seat on her own. I have plenty of reach to buckle her, but it’s a stretch for momma. I replaced the bolt holding the rear seatbelt latches on the floor with a racing restraint eyebolt (not a hardware store eyebolt) to attach the top strap.
We like the extra protection factor of the center position, but it won’t work with more than one seat. Kiddo loves it and can often be heard asking to go for a Jeep ride.