Replacing Bench with Buckets 67 Dart

I was just wondering if I had the right bucket seats in my 72 (I think 67 - 76 are the same) duster now that Ihave them out for a 4spd swap. I was convinced that they were mounted in the wrong place it the floor because it didnt seem sturdy enough where the bolts go through. And there were holes in the floor on the ridges, apparently there for the bench seats. Anyway turns out I have the right seats, I just need to make sure I have the correct floor supports welded in.
Some threads that really helped me:
http://www.forabodiesonly.com/mopar/showthread.php?t=132451
http://www.forabodiesonly.com/mopar/showthread.php?t=118135