[b-man]

It’s easy to just swap in a manual master and delete the booster. You just end up using the upper two studs on the firewall and the lower two don’t interfere with anything. Just put nuts and lock washers on the two lower studs to secure the pedal assembly.

Did exactly that on my ‘64 Le Mans convertible that was originally equipped with power brakes.

I’m swapping to a 1970 Firebird manual disc brake master cylinder with a 1” bore. Was actually using a 1-1/8” bore unit and it worked fine but since that one began leaking due to advanced age I’m swapping it for the 1” bore master to reduce pedal effort a bit.

I’m right now waiting for the 1” bore master to arrive on special order.