Oh shoot man, I remember that post now. So it was YOU!!! lol. That gave me that idea. We have the same crossmember. I shoulda coulda woulda.
Yeah it's those angles that concern me. I realize the actual X is a wide open chamber, but the air/gases moving along the pipe bends coming into the X will be angled toward the opposing side instead of into the X like normal. So essentially the left and right banks will be angled "against" each other(like a head on collision), more violently than if they were angled parallel "with" each other. I think of those wind tunnels they build to test aerodynamics of cars, or I think of porting and polishing heads and gasket matching ports to create a smoother flow of air.
I don't want to say this "isn't" going to work, my brain is just having a hard time imagining it will work efficiently is all. I see turbulance in your future
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