Can you identify these seats?

I found a serial number on the bottom of the seat and they identify as: *drum roll*

1969 FORD MUSTANG BUCKETS!

Ugh. But actually they fit perfect.
The previous owner must have made those brackets to adjust the ride height.
I measured the seat height of the bench seat and it was 9". The Mustang seats with the brackets have a ride height of 9.75". Just about perfect. I think I'm just going to weld reinforcing plates in the floor and use them for now.
Until I can find someone who will trade me 69' Dart buckets for these 69' Mustangs.

mustang seats.jpg