Well that intake is a way lot better than the MoPar W2 dual plane offering! That's for sure! I have run that intake before. With the MoPar mods. Milled plenum devider, TQ hogged, it really help my old combo out. It added a bit of rpm up top. It is a good way to (leagally) cheat. The old kit car program? Some racing rules some where long ago demanded a dual plane intake to be used and so there it was! Just modified where you can't see it.
A lot will have to do with the current or intended state of the head ports.
To bad MoPar Muscle didn't test the flow of that intake.
And now after I hit send... I just thought to myself... Hey! Edelbrock never castes a dual plane for the W2's, they could have done it RPM style.