I had looked around for someone fitting that double filter but couldn't find any images. Can't say I'm a fan of it kicked off to the side like that. Makes sense on a bike where it's facing forward. Though likely in practice it wouldn't make much difference, just look asymmetric as all get out.
Is $500 - $600 the price people are seeing on the unlocked ecm systems? just wondering as "loads of money" can be subjective.
Barring having to tweak the ecm I'd be tempted to weld up something a little more symmetrical than that kicked over to the left hand side intake.