Help ID - Power Seat Track

[Falbz]

Hey guys,

The other day I picked up a real nice set of black 70 Bucket seats locally and on the drivers seat it had this power seat track.  I can't seem to ID where these tracks came out of and the only numbers I can see are 2583113 on the top.  They definitely do not look like B/E and not sure if these are correct for C bodies. The seats came out of a 68 Polara Convertible but not sure if they were drilled in custom.  They were just too good to pass up.

Anyways can anyone help me ID where they came from and what they are worth.  I tried looking up the part number but couldn't find anything.  Thanks