Stands can be replicated with min amt of ingenuity.
Suspect (admitting I haven't yet tried it) that the only potential difference with the sliders might be the length of the securing bolts that go through the floor (2 per slider, four per seat, eight in total).
Driver side power seat mechanism in the '67 Cyclone is completely worn out and 'effed up. It is also HEAVY, like battleship anchor heavy. Consequently, plan is to go with 67/68 'Stang manual sliders sold by NPD. I'm going to say the bolt issue -- if it exists -- can also be easily solved with local talent.
If the sliders are totally incompatible I'll just send 'em back. Will keep you posted.