QuickFuel 880 Surging/Missing At Wide Open Throttle

Curious as to where your total timing falls and when it's all in by. I see 16 initial if it's over advancing it could be what's causing your issue. Also are you running a vacuum advance. The vacuum shouldn't be a factor at wot, just trying to pull a little more info. Have you looked at the plugs? I would personally start on the ignition side then go to fuel delivery. What kind of rpm are you looking at when this occurs? There's some history with the orange boxes scattering spark at higher rpm as well as issues with rotor phasing with the Mopar distributors. Did you have this issue before the carb swap? Keep in mind most carbs are setup to cover a wide array of applications but don't always work well on any particular application.