Rover V8 twin inlet manifold?

[KKson]

I have never seen or heard of one of these before. Twin plenum - yes but inlets either side of the plenum? Bet it's a pig to get both throttles synced! Nothing to do with me but curious as to what it's off.

http://www.ebay.co.uk/itm/Rover-V8-twin-inlet-mani...