seat tracks

[rusty]

I am looking for a set of bucket seat tracks for my 69 dart,I have hi-backs from a duster but no tracks.There is a local guy here with boxes of tracks he said 50 a set,but I don't know what they look like,anyone have pics?,or anyone have some for sale,the holes in my floor pan are at approx 12 in centers.Thanks for any help,Todd