A833 OD swap - Clutch fork

IIRC, the location of the inner z-bar mount is also different, and guys are having a hard time marrying that BH to an early A-body.
I have a V8 F-body bell with a correct bolt-on inboard-bracket for a 68 Barracuda, that I am using with a 65 Commando trans, and an adapter ring installed for the smaller retainer. So I know it can be done. I also have converted the Commando short tail, to a long-tail and put the shifter in a custom location, about 7 inches back between the buckets, up against my thigh, and I raised it high enough to install the top shifter bolt from inside the cabin. and then I installed a really short shifter.
badabing, no more knuckles in the dash.
Good luck.

IMHO, Brewers price is more than fair, for a product known to work, and ready to ship, and you already have a customer for the current one..