I've always been fond of falcon/mustang assemblies. the bolt right in to several early applications with very little modification and you can use the late (67 ish) dual resevoir units.
Glad this isnt a Toyota thread............On a more serious note check out an MG midget, they keep the Hyd Clutch and Brake master in this tidy little H box.....could be adapted to something else pretty easily........as long as you don't need a vacuum booster.
This hanging pedal setup is a stock Ford Econoline unit I have used since 1962, the entire unit fits under the cowl area & incorporates both hyd. clutch & brakes master cyls. on engine side of firewall.----Don