It wasn't on a Mopar, but my buddy put one of them Holley's on his Mustang, and it ran horrible, three of us fought with it for hours. Finally he said forget it, returned it and got an Edelbrock instead. Demon carbs are the way to go these days, they are just absolutely awesome. Up here in Redding, there is a guy who does carbs, and he is big into Mopars, and can take the new Barry Grant Demon 3 x 2's setup and install them on Mopar 6 pack manifolds.