Brakes have been a charm since day 1 with this build.. the rather pricey Willwoods needed to be stripped down after finding swarf in the piston chamber of one, the hoses remade to meet the AU standards as well as the caliper bodies retapped to take a UNC thread (7/16 - 20).
After the BA Falcon booster and MC, which were matched to the BA ABS controller could not be fitted under the bonnet I went to a 7" diaphragm hot rod style booster and MC set up, only to find, in short, the thing was @#(*&@(#*&@(* !!@! useless.
Third times a charm... XA Falcon booster, 8" dia which fits, with a few mm clearance, modified to OE spec to be double diaphragm / 1400psi output, mated via a 3D printed adapter plate (draft version shown in yellow) to an XC Cobra master cylinder with a 1" bore, (which was ironically the car I was initially looking to build). Res. capacity exceeds the piston fluid capacity across their full travel, is ADR complaint, sits around 25mm lower than the BA equivalent and is a dual port configuration, matching the input ports on the ABS controller.
Getting a longer booster pushrod made up in the next day or two (as I didnt have any hardened steel dowel) to compensate for the adapter plate and we will see how it goes.
A shout out to Tim and the team at Warringah Brake and Clutch for their patience, advice and perseverance. You could do a lot worse than give them a yell if you are in Sydney or need parts shipped...
Cheers
Chris