Bench Seat Compatibility?

I've got a 72 Dart Singer (front bench seat car).
I have the option of bagging a mint interior from a 68 valiant including the seat runners.

Questions I have that I could do with some input on please:
Are the bench seats interchangeable between a 72 Dart and 68 valiant (are the floopan penetrations the same dimensions/distances apart)?

The rear seat mounting: Can i pull out the 72 and install the 68 or are the tab locations/rear widths different?

Thanks