replace bench with buckets?

A bunch of us have, and this is my 73 Dart Swinger with BMW Recaro Sport seats.
My Brother and I made the adapter brackets for them with 1x1 box steel, as they were actually made for a flat floor (which we obviously don't have) :D

If I remember right the two front inner mounts are on the floorpan, the front outter mounts are spaced 1 inch, the inner rear corners are spaced 2 inches and the rear outters are spaced 3 inches because of the dropoff next to the doors.

We thought about making one big flat frame to mount the seats on and building a console box between them but didn't end up going that way, and made separate mounts for each seat.