Would this brake conversion work?

Hello, everybody.

I have a 65 Valiant SW 273. It has 9 inch drum brakes and a brake booster.
I would like to convert it to a dual-circuit brake system.
I already had a 68 with a dual-circuit system some time ago, but without a booster.
Is it possible to use the same wheel brake cylinders and master brake cylinder as on the 68? Or do the 68er not fit on the anchor plate?
Do I need a different booster or can I keep the 65?

The 65 has the following original wheel brake cylinders:

Rear: Bore 13/16,
Front: Bore 1
Port size ???

And the 68:

Rear: Bore 13/16
Front: Bore 1
Port size 3/8-24

So I'd install everything just like the 68. Brake lines and distributor cross would then be new (the same as on the 68).

I don't want disc brakes, by the way