69' Dodge Dart Resto/Upgrade in NY

Thanks for the pic of your seat track studs. Looks like they don't have the reinforcing metal brackets like the out side ones do.
Should the bucket seat studs line up with the outside holes? Mine don't look like they do.
It appears where the outside mounting holes are the floor pan is on an angle and the inside mounting surface is flat. Is that correct?
Also, do the brackets on my seats look correct? (if so I'll just drill holes in the correct places and install heavy bolts).