Aussies and Japs use KW
USA will never get metric measurements 
As a N/A Exige owner I really wish I knew what the hell you are talking about… That is not meant to be an insult.
Anyone care to do an abridged interpretation
Just willy waving Steve…count me out! 
No one ever said check out my big 304.79mm…record
I gained 12.5lb/ft and 25.7whp with Jims 4-1 2Bular Manifold…
Again, add 30bhp (or 12.5%) to those figures to get flywheel.
[quote=Adamantium]I bought it that way. I knw nothing about it really other than Kim at 2bular thinks I could free up 20bhp from the manifold.
It was dynoed for the previous owner at 317bhp but I am sceptical that that is true. [/quote]
Hmmmm… A 12" mouth?