I use to have some Dyno pull information from years ago and will see if I can dig them up but never went that way so likely it went into garbage. Also believe NHOA had put in their News Letter in the 80s the jetting used when going from a stock intake to a modified Vank intake and I believe it was on a stock motor. This is what I can remember from the dyno test on intakes. Gain from stock to Vank was around 40 HP and then using the Stage V intake it gained about 75 HP. I can not remember what changes were used for carbs and even how much if any modifications the Hemi Motor had.