Here are some pictures the guy sent me of his 1956 frame. Has a 6" lift. He said he thinks the axles are dana 60 and dana 44.
[IMG]http://i46.tinypic.com/33az7n6.jpg[/IMG]
[IMG]http://i46.tinypic.com/mww0pj.jpg[/IMG]
[IMG]http://i47.tinypic.com/bedh1u.jpg[/IMG]

The cab isn't included in the sale.