Rany W sells accurate repro dzus fastener brackets. I bought some about 6 years ago, very nive quality. Arrived in red oxide primer.
Iirc the brackets were painted black by the factory.
The actual dzus fasteners are available from racing and aircraft suppliers.
The L shaped metal sections that mount to the boot boards are anot supplied, but easily made. Cant recall if Rick offered the metal hooks that attach the false floor to the 2 footman loops on the rear bulkhead...but he does offer a full repro rear false floor.. So probably in the catalogue.