Replacement cumberbun?

I use an older Scubapro Seahawk. I have a backup but it is missing the cumberbun and I'd like to find one. It's a very simple design so if someone can show me a link to some choices for aftermarket cumberbun's I can identify one that will work.

Seems that on the front of the backplate, my bc has 2 (about the same size as a weightbelt buckle) places to connect a cumberbun. I'll add pictures if needed.

Anyone know a place to find cumberbun's for BCDs online?

Chaiyz