Typically Scarebird kits come with the brackets to mount the calipers, and any special sleeves/adapters. The rest is self sourced through parts shops.

To get back on topic, here's my Scarebird prototype brakes (not 100% fully developed).
Trial fit rear caliper mount, won't work:




Front mount, note our hose routing is not good, needs to be fixed, has nothing to do with Scarebird, though.




Master Cylinder area:






"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.

Currently working on - 1966 Dodge A100 van 318/auto
Finally - disc brakes on the front.
In the plans - rear disc brakes, B&M 250 blower