I'm back in AZ, so the truck is parked again, but I wanted to give some thoughts on the rocker bases in the seats.
The seats themselves are the same as any standard XJ or MJ bucket. I do sit 2-3" higher in the rocker base buckets than I did in the bench. I don't think that I sit too high though. My line of sight is mostly out of the upper half of the windows, which I prefer. I also swapped in my tilt column, but there is room between my legs and the steering wheel with the column straight.