This can was custom made by a guy in England. He sells on ebay and his ID is "trackandrace". I like the fact there is no logo. Scorched titanium oval, dual tip to my door for $440 with a bad exchange rate.
On your jet kit question. I have never seen a stage 2 or 3 kit. However the stage I kit has 6 different jet sizes and application guidelines. The Honda service manual seems to use a different numbering system so I can not correlate how much bigger these are. The Stage one has 2 each of 130, 132. ... 140.
K&N recommends 138/140 (different for outer/inner) for K&N airfilter with a high flow pipe. However I am thinking I will start out with 136/138. I'll post results.
Also, my bike ran great with stock jet/pipe and K&N air.