My head hits the roof of the cab. I have a 93 2wd with the standard cab. I don't like my head touching the headliner, I am only 5'11. Can we swap in a different set of rails or do some sort of mod to drop me in the cab by an inch or so?

 

93? I'm surprised it doesn't come with the lowered seat already. I have a 94 and that seat cushion is so deflated I'm neatly sitting on the floor.

 

I have an 00. The seat brackets are already pretty low profile. you might be able to drill lower mounting holes or cut up the brackets. I am 6'2" and I have never had this problem.