Legroom, a fella can never have too much, and seat reclining can make a huge difference in driving comfort too. Being a hacker I have considered cutting the double wall cab insert to allow the Procar seat to recline back more. Basically trace the outline of the seat back onto the rear cab panel, cut-it out, and then make a metal insert to weld in or use something like this old school rodders trick
http://www.hotrodders.com/forum/any-...ow-135400.html
I was planning to do this but since I have installed a flatter steering wheel (less dish) I find that it allows me room to move the seat forward a bit and recline the back. I still might do the recess, I am inclined (pun) to cut first, ask questions later. Leave no panel unmodified