When I left off....the power brakes were fully installed and I'd adjusted the shoes and set the pushrod at the pedal for 2/10" freeplay. It was much better, sensitivity gone but still just a touch sensitive and no feel in the pedal in the top third of the stroke.
Decided to reduce the ratio from manual to something less, more suitable for power brake systems.
I drilled a new brake rod mounting bolt hole exactly 1" CTC lower on the pedal. (The hole is 3/8" dia.)
With no changes to the length of the adjustable push rod, I moved it to the new lower hole (lowering the ratio). Bolted it up.
Checked the free travel just in case, just a bit over 1/8".
Took it out for a ride....no soft in the top pedal, comes on with big toe action, stops the truck, feels like a firm pedal on a properly adjusted brake system.
I'm leavin it as is. Very very very happy with this set up.
Get er done, its a good swap. And its cheeper than ya'd think.