I finally got a chance to work on getting my Sparco seats mounted, but first I needed some rails. What I ended-up using were the rails from the old Recaro seat the car had. All I needed to do to make it work was I had to enlarge and reposition the mounting holes to utilize the proper size bolt and suit the mounting locations of the Sparcos frame. Also, had to add 1/2 inch spacers to allow clearance of the slider lever rod. All in all it came out great! :D