Mom & Dad bought 4dr Valiant new in 1976 off the lot. /6, with power steering and light package as only options on it !! . . . Not even a radio - I still have that delete plate ! . . . BUT, it did come with manual disc brakes on front . . . never seemed to be an issue.

On my 70 Sport Satellite, I upgraded from the 4 wheel manual drums, to manual front disc/back drums . . . thanks to Dr. Diff, used the aluminum master cylinder, and a set of his stainless steel braided front hoses to the calipers . . . never felt that it needs power brakes, pedal feel is good and not too hard at all . . .