4 piston to single piston swap. 72 Demon

Sooooooooooo
What's wrong with different bps front to rear? I've been doing that for decades.
You know those 4-piston calipers are fabulous for a streeter. No sliders to wear out or pins to jam up, and pad replacements take mere minutes. Or hey, if one pistons freezes up in winter, due to moisture, there are still 3 others to get the job done,lol.
I really like my KHers. And I'm OK with 14x7s up front and 15x10s out back.
As to proportioning, that depends more on what your rear rubber can handle.My P-valve is gutted, and the rear could handle even more pressure.
Seems like a lotta work, for what I would call a minor gain.
But if you are wanting to run 4 same-size, interchangeable, wheel assemblies; that I can understand.
..I agree with the with your thoughts.. I have Centerlines front and rear. I want to run a set of Cop wheels with 15x6 up front an 15x10s on the rear for a Nasty look. I have a complete set of 73 front discs, spindles minus the Upper Control arms. (I gave them to a friend in need a while back) just seeing what my options are. Also i feel its time to rebuild the entire front end, pull it apart and make it new again.