I'm 6'7", I drove both those rigs for a while actually. I didn't notice any issues fitting in them. The 98 with 5 spd would get 23 on the highway at around 75. Working off memory there, but was always surprised how well it did. The full time 4wd 2003 will do 14-15 no matter how you drive or where. Admittedly that is pretty bad, but with that many mile and no repairs, I'm not selling it.
If a guy really worked and was patient, a good one owner 1998 model would be really hard to beat in my opinion. Sure the 97-99 range would be fine actually. I think the 2004/05 V6 models have had a great track record as well. Same body as the 03 and better mileage. Good luck in your search.
