Clutch ball stud bracket

What bellhousing are you using? Is it one for the stock 273 clutch (9.5"? I don't remember size for sure) or the later 10.5" clutch?

I know that Brewer's www.brewersperformanc.com sells a bracket with the stud that's supposed to be a bolt in when using a 10.5" clutch & bellhousing in the early cars. I don't think there's a stock part that works in the early cars with the larger clutch.