Dany has
C12 circuit boards, if Chunger is out of the Matador kits. You can get blank bodies with power supply from
Aurycle, or get an
Alctron HT-11A or equivalent for Reverb or eBay. You will have to order the components from
Mouser or
Digi-Key, but there are BOMs for that. Studio 939 might still have
transformers, or get them from
AMI or
Cinemag directly. For tubes, Studio 939 has some from
Christian Whitmore, or
Tube Depot, *Bay, etc. For capsules, there are lots of choices, such as
Studio 939,
Advanced Audio,
Microphone Parts, etc.
Or, if you want an entire kit,
Microphone Parts has a kit which includes everything you need.
Happy building!