Rocketman I read your posting at https://www.ls1lt1.com.
Hmmm. You have my kind of luck.
Bowers is still in business, but not making the bracket you want, because no one was buying them.
You could piece together used high dollar Corvette parts or buy billet parts but they cost an arm and a leg. You are not making a "show" engine.
You want a decent bracket that mounts high on the driver's side so you don't have to do weird stuff like notching the frame or cutting the inner fender.
I tried to find a picture of what the bracket looks like. Is this it?
Have you tried calling the owner of Bowers Race & Rod Shop?
Be humble (you know, beg) and ask if he could help out.
Ask for any stray parts left over from a kit he may have lying around or maybe some drawings would be nice.