That is way off from anything practical. fwiw
Should start with a 2 for Pontiac .( 1 is Chevy iirc)
Then model year.
Then Plant
Then last 6 of a VIN
What is stamped up top on passenger side front face of block - just below the head ?
What heads and exhaust manifolds are on it ?
There will be a casting date on the block right behind the distributor mounting bolt.
The Cali Carb is a deficit to performance.
Sight unseen buyers are a sellers dream , and usually what most are hoping for.