All I have to say is to the OP is:
"Warning: Be sure to verify all Pontiac info found in print, by word of mouth, or on the internet (including here). There's a LOT of erroneous and misleading info out there."
What the OEMs are doing w/"modern" engines has little to do w/a Pontiac V8 that was out of production >35 years ago.
As for cutting a deck being preferable to milling a head, I stand by my previous statement regarding milling blocks vs. heads, and will leave it at that.
Pontiac used the same engines/heads/pistons/CR regardless of application in the smog years w/only a few exceptions like the W72 and 301 turbo engines used in the F-body.
And of course the Pontiac 4X and 6X heads, etc. have a quench pad- regardless of chamber size, shown below: