Out with the 340 & in with the 410 stroker!
I may be concluding wrongly and I'm sure others can tell me if I am... but the flow around the head of a valve if there is no impediment on the approach or beyond the valve head looks like a tear drop (it curves around the valve head as it passes the seat angle for the entire circumference and then tapers in a cone shape with the "tip" of the cone at varying distances from the valve as it goes through the opening and closing manuevers). The Mopar intake ports are all handed (because they are EIIE EIIE) and the resulting shrouding is always on the long length of the port. I think by removing all shrouding but not being able to address the "handed" aspect of the port and in particular the area leading to the SSR on the long side, you end up causing more turbulence in the bowl area leading to the seat where the long side of the handed port, and the short side of the handed port have to converge. More because the on the longer, straighter side the air needs to be slowed down to make the turn in the same volumes as the short where its being slowed and turned by the pushrod bulge. The shrouding will help "abcl up" or slow down the longer fast side, allowing for the valve to flow it's entire perimeter and the cylinder to fill better. On a non-handed portm shrouding is much more of a "bad thing". On a handed port it might not be so bad...
I think....lol.