Power to manual brakes

Hello GSX!!

My second post, I hope you are a patient man!!! I’ve got a 66 Dart GT with the same redundant vacuum chamber, you have the only other one in existence, I swear!!! I thought it was a plant from a 61 Dart/Desoto, that’s as close as I could find. I’ve got a manual master, and a summit “conversion” power unit and master sitting on the bench, and I’m torn, 50/50. I am starting to lean towards no power, clean things up, hate that extra vacuum tank. Why? Should a very mild 360 make adequate vacuum without it? Was a factory 273 4v low on vac.? Have you seen many of these beasts on your journey? Going to send now, maybe I’ve said too much!!! It kicked me out, but I found it again!! Thanks for listening GSX!!!