Man, I've been away from engine modding for too long.... that was greek to me for 10 seconds
Are these current OEM heads, or production aftermarket? If we can get a programmer, or better a MAF conversion with better flowing heads or port/polished OEM heads and revised intake, the 5.7L should be able to pick up over 50HP easily with headers, the 6.1L should be through the roof.
Any spys at Chrysler engineering reading this, send a bootleg copy of the CANBUS code map and any other help to the aftermarket now!! Big$$$$ and you can remain anonymous...... ( just kidding
, I don't advocate piracy or condone illegal acts)