Seat track parts question

[chargerbr549]

I just bought a 72 Dart for a bigblock project car (it weighs about 700 lbs less than my 69 Charger) and I am putting 79 Magnum bucket seats in it and in the process some plastic parts broke apart and fell out of the seat tracks and now they are very loose. I did some searching and can't find these pieces, are they available or am I going to have to tear apart other seat tracks and rob the parts out of them or is there another way to tighten up the seat tracks?

Kevin

[Charger-Bodie]

I dont know of anyone making those pieces. You will probably need to find some used tracks.