Dave, sorry about the delay in getting back to you. It's been rather busy the last week or so.
This is the bracket that I have. It's from an 86 345. The 454 it came off of had a half serpentine and have v-belt configuration. The AC pump was driven off of a v-belt.
I have the top adjusting bar as well but I do not have the support brace that goes from the back of the bracket down to the cylinder head. I had previously sent that piece off to Boom Sounds.
I'm not sure if there is anything else needed to bolt this bracket to the engine block. Somewhere I've got some pictures of it when it was installed and I'll look for them.