[ErnessW]

What do you mean by "bog". There's nothing pulling the air along from the air filtre to the cylinders but the vacuum created by the pistons themselves. Seems to me, the less air volume, (the roughly six feet of pipe length from grill to injectors) the easier the air will be sucked into the cyclinder when the valve opens.
I have a picture somewhere (I'll find it) of the four flaps that comprise just three inches of intake manifold for a working adjustable air intake already existing on the sp engine.
here's one of that extra big intake manifold stuck on the side of motor.