Confused on seats
 

I just bought a project car and the interior is completely ripped out just a stearing wheel, shifter, and ebrake the rest is gone. So after I got it running I bought some seats for it. Nothing special just some cheap racing seats the local shop was selling, but the point of this is that when I go to install I have no mounts just threaded holes in the floor where I think they should go, and everytime I try to talk to someone about buying used ones they want to cut out the floor so I am wondering if the mount on the original seat was connected to the rails and if I need ask for the rails instead of the mounts. Sorry if I rambled on. Please Help.

Please Help!!!

The stock mounts are seprate from the rails