[MrPbody]

Most A-body frames have the little bracket already on them. It is a "fork" sticking up on the driver's side, just under the master cylinder. The bell crank attaches there.
All the necessary hardware is available from Ames Performance or Performance Years. Avoid Year One, OPGI or The Paddock. They're Chevy-oriented and will pawn off Chevy parts because they "fit". Ames and PY sell ONLY Pontiac stuff.
An alternative to the conventional bell crank system would be a hydraulic throwout bearing from McCleod or Stock Car Products.
You should also check out the Pontiac sites performanceyears.com, classicalpontiac.com, boyleworks.com/musclecars
These sites are dedicated to the Injun engine, where no one will tell you to "just put a Chevy in it". Those that recommend that are out of touch with today's performance cars. Chevys are fine, but belong in Chevys, NOT Pontiacs. The Pontiac engine is fully capable and durable.
You might also want to pick up Jim Hand's book "How to Build Max-performance Pontiac V8s". This book is a current study in the street-performance building of the real Pontiac V8. No mythology or "old school" superstition. His car runs mid 11s on pump gas and a flat tappet hydraulic cam, at 4,100 lbs. It also goes back and forth to the grocery without issues.