My modded (2" inlet) R1 can is on ebay atm. Finishes in an hour. Quite a lot of watchers but no bids so far.
Ebay Linky

Out of intest, how did you have it modified?

I have one the same and took it to Bogg Bros or modification but they couldn't manage it.

Mate of a mate did it. He welds titanium for a living.

If only it had been up a couple of months back.

I ended up having a small stainless link pipe made up to sleve into fit, but that looks a lot neater solution.