Paul - if Mike does not have your coil there are opportunities to buy them at HAMB or ebay in NOS condition. However,there are a lot of vintage "Mallory Coils" out there for multiple applications ranging from standard to rather exotic-for-its-day (built in Capacitive Discharge). There are also external, stand-alone Mallory CD ignitions that work with standard Mallory coils. Lots of choices. Mike can help you get the right one for your application. The HAMB boys are pretty up on these coils too.
In case you missed it, this is the set up that I restored for my Nova (the coil is NOS and needed very little work):
