FYI, Attached is a condensed (no .05 increments) spreadsheet showing the difference bewtween stock and CNC ported Mopar Performance cylinder heads. Brian at MP gave me this info and I thought membership might be interested.

5.7L Hemi
P5153343 Left/P5153344 Right

6.1L Hemi
P5153349 Left/P5153350 Right

The numbers look good to me, lots of HP potential there especially in the 6.1L heads. You be the judge.