Does your truck have 10 hole stud piloted wheels? Otherwise you will probably have to get custom wheels made. They are not going to ride good because you need to keep 100 psi in them. These are what we call lopro 24.5. I run lowpro 22.5. I buy a lot of tires from this guy.

http://www.worldoftires.com//index.php?cPath=43_45

If you have Michelin or Bridgestone in mind, add about $200 per tire.