Yeah I was a little disappointed with the factory headwork Buzz. My mate who did the work said the inlets were a real mess in stock form and required a lot of cleaning up. The exhaust side was not too bad however. It is flowing almost 112HP with stock valves now!!!
I am still putting it all back together - I got the new 813 cams but the valve clearances were all out of whack, so I had to order new shims which still am waiting for. I will keep you posted on the progress Buzz.
Cheers - Rhys