Regarding the 2nd (blue) car, I agree - pretty darn modified.

Here I wonder about somebody who puts all this effort into a car and does seem to know enough not to use the dreaded "400 big block" term and thinks the original Rally II wheels are 15 inch.

And there is this winner: "12-bolt Pontiac posi-traction rear-end with 3.35 gears"

This guy modified the crap out of '68 Firebird but seems to know nothing about Firebirds.

This phrase: "The body seams have been removed for a clean look", would scare the hell out of me.