As the title says, I am searching for flow numbers on the 2780559M heads. I plan on building a stock displacement 426 for a good solid street car. I want to match the cam to the flow characteristics of the heads but can't seem to find much information. I've only been able to find supposed intake flow numbers but exhaust numbers are extremely important as well. Want to get it right. Also if anyone has any porting tips for these heads. I'll listen to any and all advice, first time building a HEMI. Thanks!