I was looking into this as well. Maybe all you need is the whole r6 system (header, pipe, and can) and it will mount up with little modification. The r6 header looks almost the same as ours except for the fact that it exits out the side where ours curves up under the seat.
Maybe there's a chance of performance gains? The r6 system looks slightly less restrictive than ours. Plus the cheaper aftermarket options (1 can vs. 2).
The only downsides are fabbing up the undertail to make it look right without the stock exhaust and the slight reduction in aerodynamics from running a can on the side (like we go that fast anyways :lao )
Something to ponder anyways!