I was also thinking of doing this dual air cleaner thing. But out of curiousity, why didnt you make the tubes coming out of the round air box point the same way? /O\ Now work with me, its hard to do this with limited symbols, but imagine cutting your box in half, and laying it on itself with the tubes on the same end. See how they point in opposite directions? Could you have done what you did, but had them both the same. So if you was to cut it in half, it would look like 1 instead of 2 when you laid them on top of each other? Hard to explain but do you understand?
Not bashing your idea, I have planned on doing it for awhile, just wondering if there was a reason it couldnt be done like I have planned, so I can save my self a headache.