A friend of mine owns a bike shop...we put it on at the shop...he told me hes heard of people cutting part of the pipe and rewelding it to cut it down so it's even with the tail...i suppose if you modified the bracket that supports the canister itself then you could tuck it under the tail tighter...
i was worried about how far it stuck out but when you see it on..it looks great...im not sure the pictures do it justice.