Re: 11” Brakes?
Be advised that the weakness of Model A mechanical brakes comes not in the mechanical, but rather in Ford's choice of pressed steel drums for Model A production.
Pressed steel work fine when they're new. But wear "thins" the drums and creates a condition where the steel mass heats quickly and the brakes "fade" as the drum expands under heat.
Better is to use cast iron drums from aftermarkets such as Mel Gross, which is actually where Ford went late in the 1931 model year for exactly the reason given.
MEANWHILE, if you persist in later Ford Hydraulic Brakes, you'll find that periodic brake "adjustment" still exists, even with Hydraulic. You have to get into the late 1950s to get into "self-adjusting" brake mechanisms.
And - while later Ford Hydraulic brakes can be made to fit, you end up cutting bolt holes to "slots" to make it happen and putting holes in the backing plates to clear the shackle eyes. And when you're done you may have improved the brakes by virtue of cast iron drums, but the car won't stop any better being hydraulic over mechanical/cast iron.
Hydraulic is the fluid and functional equivalent of mechanical force transfer.
Go with what you think pleases you.
Joe K