Take a good look at that car. It's been available for about 4 months. Look at the roof, interior under hood, quarters, body , everything.
The pictures you are showing are poor quality.
Imo I'd find a cheap 360 to pep it up and then focus on Grandpa's roadrunner sitting there!
I also have a red 72, though it's a clone with the correct grill and such
Here’s what one rebuilder said about my oddball power booster when I asked him if it was aftermarket
No In 1964-to Early 65 they used C64 K/H ( See attached ) as OEM units on some models and not on others
Here is the reason why I asked. Over the last week I've been smitten with a 72 Polara on marketplace. The owner gave the reason for selling it was because of the broken tailgate window.
Most people think backwards on automotive development.
Instead think forward. Pick a year to start, like 1955. Now this will show you they didn't have a 727 yet and didn't know how great they would be. So they were stuck with powerflights and cast iron torqueflight.