HI texastruck
I am just getting back into these trucks after a 2 year stint dabbling in Willys Jeeps but you cant get much more farm truck look than theses tires
http://walcks4wd.com/7-00x15-super-traction-tires.html
I think you can find them on ebay also...they are made in the USA I believe also.
I am going to be rebuilding a 1951 Chevy 1 ton farm truck and I want to keep it like it is...a farm truck...
These will take you thru just anything you can find. These are pretty period correct too....
Good luck in your search.
MikeC