iagree I just went and looked at a Dana 61 recently that was for sale locally. It was supposed to be a 60. It came out of a mid '80s Ford van. This one in particular had 3.54 gears, but they came w/ 3.31 and 3.07 gears also IIRC.
The one I looked at was a full floater.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax