Those front backing plates look like upside down Model A ones with a wheel cylinder put in it.
Might be easier to start over with a new system .Most people use 40-48 Ford brakes for Hydraulics
If it were mine I would put the Rod brake system back on it . You often see them advertised on the Ford Barn Swap Section.
I'm sure smarter people than me will chip in with good ideas .
John Cochran