Two are passenger car units from the late 60's SMB. they were professionally rebuilt by AMMCO. The 3rd one is a 4x4 BB unit and operates fine. The numbers are PK 3681056 4004 542 for the 4x4.
2892088L 2609 and PK 3681053 4345 for the two AMMCO's.
$ 225 for the AMMCO's each plus shipping. $...