your best bet is to ask about a specific design you'd like them to make( like a Dynaco A-451 or Peerless S-265-Q or...). Or to ask for a design for a specific purpose, Hi-Fi or Guitar or _____.There are a bunch of their guitar amp OPTx's listed ont he website but nearly none of the old Hi-Fi. They also do new design work. They might also have a custom propriatary wind which can be wound with permission.
regards,
Douglas