225 bogs taking off from stop while hot

JL0708 said
I currently have the EGR disconnected

That's fine, don't fret about it. Just leave it disabled unless you have uncontrollable spark knock and can't get rid of it without an ignition timing setting that makes other problems.

JL0708 said
My car didn’t have/come with the head mounted vacuum amplifier

It was built with one; that's how the Chrysler EGR systems of that time were designed. Someone took it off.