Seat belts ?

As long as the metal parts of your belts are good, I second the opinion that getting them re-webbed is a much better option than buying a new set.

I understand that Hooker Harness is another place to have them re-webbed.
http://www.hookerharness.com/aviation.php

I've looked at several options, Gadringer are the best I have come across (design, comfort. Etc.).

The original lap belt would take longer to release in an emergency than a rotary buckle so using the existing hardware is out.

My club has a ship with Davis belts, they are big and clunky.