OK, I have unwrapped the pipe and it is a Circle F one, lovely made pipe and muffler (a shorty so cant be used). Put me down for one Ross, they can be shipped to my workshop if you/we do a bulk order. If he can make longer mufflers that would be a bonus as those shorty's wont pass the 95db limit. It may also be cheaper to not have the stinger pipe welded on, just marked where it goes. let me know, cheers.