ISO: looking for a known working brake booster for a 73-76 A-body for disc brakes.

Haven't forgot about you but I've come into some issues taking people here and there and haven't had a chance to get a quote yet will still try and get that done this week
No hurry, I took my duster on a cruise night tonight and I think the motor let go, lost all oil pressure and she’s making rattling noises. I’m Definitely still interested in the booster, but like I said, no hurry