My father has I think a 65 Alpine that he recently purchased that has some quirky brake issues. It is a 1725 with power brakes.
The rear brakes would lock up almost immediately while driving. The wheel cylinders in the back looked questionable so I replaced them, only to find that it is doing the same thing and now the front brakes are locking up.
After searching here I see that problems with the booster are common, does this sound like a booster gone bad that is not allowing the pistons to retract?