I run an mtc link pipe with a 16" can,fitted with a universal baffle,but I'm just finishing off an akrapovic can which i needed a sleeve. That can is 14" as I had to shorten it to avoid contact with the panniers rear upper mounting bar.
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http://imageshack.us/photo/my-images/924/8zgsTz.jpg

Are you planning on using your original exhausts link pipe.

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2011 xt660z.
Yoshimura cans ,kev mod,Dna 2, Stahlkoffer panniers,Hepco Becker box,Givi crash bars,Mita e07 tyres.