alternator brackets?

Many sell the triangular bracket and tensioning strap on ebay for both SB and BB. I got a pretty chrome setup for ~$20 as I recall.

I recently bought a rebuilt 105 A alternator (that 67Dart273 links) on ebay. I just ran across it while browsing and only $45, so bit. I was surprised how big and heavy it is in person. I was expecting more like a Denso size. Not sure I will ever use it. Maybe on my C-body, though thatstays charged fine with the little round-back.