1972 duster power brake booster

Hey there - am struggling to find a 54-76101 Cardone brake booster. Are there other options - right now am not worried about stock, just need to get my baby back in the road, my current booster is unsafe? Any help appreciated. Thank you.
The cardone is out of stock , I found this one on ebay , and still had to use the back half off my old one to let it bolt up to my pedal an brackets , I learned a lot about how there made , If you dont luck out as I did and find one that was N.O.S. then there are places that rebuild them , If I knew a part source I could build one myself , if I run across one anywhere I will let you know , but you might try getting your rebuilt
Booster Dewey in the northwest rebuilds mine...