Alternative alternator bracket?

[Bearhawg]

My apologies for resurrecting and old thread but this is the best result from my searching. I am looking for the bracket shown in my picture that looks to match up with the ones in thread. Can anyone tell me where i can find one to purchase? I dont need the lower cast bracket that bolts to the head, just the upper adjuster bracket. I've searched the interweb and the closest match seems to be from a C2 Corvette, which makes it more expensive.
Thanks for your help.