I showed the power difference between the Afr enforcer Ls3 head versus a stock 823 Head. I also show flow numbers and other information about the two heads.
Link to buy digital copies of dyno sheets.
https://weingartnerracing.braveshop.com/#!/PDF-Copies-Of-Dyno-Session-1-With-LS-408-Dyno-Mule/p/680079333/category=0
Link to preorder Ls dyno testing print book
https://weingartnerracing.braveshop.com/#!/Preorder-of-LS-DYNO-Mule-Testing-Print-Book/p/680672559/category=0