No the non-dually 1 ton rear ends are not full floaters.

Here I post I put together about the 2wd vs 4wd rear axles & diffs.
http://www.pirate4x4.com/forum/showthread.php?s=&postid=1876052#post1876052


Project Quasimodo
'85 Xtra Cab (2wd, 22RTE, Auto => 4wd, 3RZ, w56, 2.28x4.70)