I just ordered the 8" setup. If your a member of the fz6r-forum members group on facebook ill be posting pics and a sound slip on there when I done. Comes in on monday.
on the delkevic website their picture of exhaust is on a bike with a center stand. Maybe contact them. On a side note if you get post a sound clip as I debating getting it soon.
I say if they dont look dry rotted at all youll be ok. I just picked up a 09 with 1250 miles and its on original tires. They look like new so I been driving on them no issues at all.