Using asbestos pads and shoes will make you think you added a booster. Asbestos friction is all over ebay and well connected brake suppliers can still get it. It is like R-12 refrigerant, illegal to manufacture but legal to buy, sell and own. It has a vastly higher friction coefficient that "organic" friction and is also easy on drums and rotors.
How do I know this. My '36 Chevy pickup was restored in the early 70s when asbestos was all there was. It stops great with an all original brake system except for silicone fluid.
Also I have a street rod, a SBC Chevy powered '32 Ford roadster. It has a Ford 8 inch rear end with stock 10" x 2" drum brakes and GM "Metric" discs in front, non-boosted. With available "organic" friction that thing would not stop. Now, with asbestos friction it stops great!
Asbestos brake linings are illegal in the US. Have been fior over 30 yearsAny asbestos brake linings that you are going to find are going to be chap Chinese junk, and is illegal to import into the US as well.
