Technical Cadillac 390 alternator bracket options

Looking to change exhaust headers out to a pair of Sandersons. With that the stock generator/alternator mount goes away. Looking for options and ideas. Pics below.

Thanks

 

I don’t know if you tried this site but they have more than just stock parts
https://www.caddydaddy.com/
They have a bunch of looks like SBC brackets which could be made to work. It might be time to switch over to an alternator to cut down on size

 

I made my own bracket to hold a Ford generator up top when I put the 331 in my 40. Through bolt goes through the tube in the bottom. I used an off the shelf chrome bracket on top.