EFD is out of business - last time I emailed them about stocks I was informed one of the founders had passed away and the company was folded up shortly thereafter.
Other than "arealgunnut" in the Yukon, with some occasional inventory, I have no idea who'd be making reproduction stock sets.
I did get a reply from the fellows in Saskatchewan (can't remember the company name at the moment) who do restorations, they have reproduction stock sets available for $375 a piece. Pricey stuff...