1965 Dodge Dart Charger

Interior day is coming closer. Today I started to assemble the seat tracks for each seat. There is two different models. The silver zinc screws shall be up front of the tracks and the black phosphated nut w/washer shall the at the back. Now I just need to find out where it did put the black phosphated seat spring that goes between the seat tracks!!!!!:banghead:

The chromed seat cover protector is newly chromed and was in mint condition. The nuts w/lock washer has a special nut with two half circle rings.

I'm betting that those semi-circular marks on the nuts are either some sort of manufacturer's identification or they're an assembly aid for the process that attaches the toothed washer to the other side.