Jennings pointed out 35 years ago that the volume in the squish band does almost nothing - it burns too late, and burns with lower efficiency than the remainder of the chamber volume, which adds to emissions.
That's why the chamber on 452 etc. RB heads is recessed - to get that volume exposed to the flame front at the right time, and reduce emissions.
If you have a 10cc band at .080" now, reducing the band to .040" and 5 cc not only suppresses knock, etc. but also adds 5cc to engine size.