Its one of these
http://www.cbsonline.co.uk/product/B....750%22_MAK750 3/4" and it'll mount in the tunnel. It looks very similar to a Wilwood kit that is available but I won't know till I get a look.
To be paired at the moment with a CNC slace. I was just after being lazy with some measurements really, fabbing a mount from 3mm plate shouldn't be difficult once Ive got some in there.
I see speedshop have released some more throttle bodies too, though I don't know how recent it is. I'm really impressed with their stuff and its excellent value once the price is factored in, certainly in comparison to Jenvey.