No Needturbo 6, the idea hit me when I spotted the EA series II intake in the wreckers, actually I haven't seen the XH ute air intake.

the xh one works well..
The problem with having two openings facing slightly diff directions with diff diameters and shapes may be explained by fluid dynamics.

even though the engine is sucking , one sealed snorkel will work better than 2 as above cos if there is any diff in pressure within each snorkel section one will work against the other and actually try and push toward the lower pressure area (least effective snorkel section). this wont allow a full on build up of air (higher pressure) rushing into a bottleneck created by one larger snorkel to the airbox.

so yes 2 snorkels can get higher volumes of cold air toward the filter, but you wont have the forced induction bit happening..

just what i reckon
(air is classed as a fluid)