Have you verified the booster yet ?? If not I would do that before spending the $$ on the below kit.


A kit a similar to this

Hydraulic/ brake pressure test kit

You should be Generating 1800+ PSI on a typical brake system during a panic stop at the master and calipers. I typically like to see 2000+.
There are a ton of variables when it comes to those numbers but these are typical of my findings with disc brake system from the 60's- 70's and the conversion kits.

Keep us posted