1967 Dart Bucket Seat Question

Good Morning All
Recently acquired a '67 Dart GT with bucket seats. It appears that somewhere along the line someone re-engineered the seat mounts.
It now utilizes small blocks of wood under the tracks. What i don't see is the adjustable plates that allowed you to tweak each set for tilt.
I remember these from a '65 Barracuda that I owned many moons ago.
Anyway, is there suppose to be something that attaches to the floor and allows for individual seat adjustment? My '67 shop manual hasn't arrived yet but I do see them in other manuals.
Any info is greatly appreciated.
Thanks for your time
'64 Dart