Same here and my TJ was the same as far as height but I didnt have the rollbar to contend with, so the TJ was better. I'm 6 1 and have found several suitable positions so I cant get too bent about it.I greatly dislike the driver seat height and lack of comfort. I'm 6'4" and it's dangerous having my head right by the roll bar and having to look down on the instrument panel. They need to drop the seat atleast 2"! I'll gladly pay more $ for this option.
I was thinking of ordering or waiting for a driver side seat bracket to show up at a junk yard and possibly cutting it down about an inch, re-welding. That should do the trick I would imagine. If I was 6 4 like you I'd look into it. Might be all you need to do, leg room even for you should be stellar.