Holley Carb Jetting Help, Lousy Fuel Mileage

Wow, the lowly Pro-jection is showing some love, eh? My buddy loves his Pro-jection on his 392ish Cleveland so much that he is buying another for his 451 Mopar. That wideband up the tailpipe needs to be WAY up the tailpipe as any O2 that is sensed should be coming from the cylinders instead of atmosphere. ONly way I can see it working properly is if its as close to the collector as possible, nice and hot. Most all 2008 and newer cars should have a wideband O2. just need a controller to see the ratios.