I installed a slip on graves 07 carbon can exhaust on my bike. I mostly use it for track, had the track plastics/street plastics on and bad ju ju! It slipped on fine, mounted fine from my 06 graves titanium exhaust, but the cans are much higher and end right at the rear plastics area.
I burnt the back and melted the light. 07 plastics are shorter then the 04-06 R1! (duh) So I thought mount up a rear tail from the 07 on my 06. The race plastic fairing I bought did not match up with the bolt hole on the rear subframe hole. I did not go as far as trying a complete subframe exchange to make it match. Just bought a new exhaust! Again, this was on a graves CF cans set up, not the Ak.
Good luck and tell us how it went, if you do it. This is my experience and wanted to help as I tried somethinig similar with a different exhaust. Good luck!
2006 R1 RAVEN with some stuff....