Dave, this was the old TMCC crane car tender. I used some short box Kadees (806?) and CAed some styrene flush with the original coupler cutouts in the frame. I use some 8mm long 2mm screws time mount the boxes. I found a way to snip off the claw coupler and keep enough of the meat in the trucks to retain the pickup rollers. Hope these pics help:
I should probably clean that roller oops.
