Back in late 2013 thru early 2014 the company I work for did Endurance testing on intakes based off of or similar to Holley 300-130,300-131,300-124 & 830031. 5 engines each intake, we were looking for real world flow issues.
With the Challenger selling like it has and FC pushing Retro fit G3s it's only a matter of time before the After market catches up to the demand.
We were told at the time the big issue was the approach angle to the intake port, because it's horizontal and not angled getting the flow to maintain speed and still be able to keep the intake under the hood , hence why the Drag Pak is Sooooooooo F--ing tall.
Due to an N.D.A That's all I'll say.