I have a Moroso Brute Strength (that needs new clutches) I wouldn't mind working into a trade for a 3 series Eaton style posi. Outright purchase of a 3 series posi is possible... Not interested in the Auburn cone-style posi, and don't want a locker.
FYI: Moroso Brute Strength = 4 series carrier, and uses factory 12 bolt axles.