Hi Dean. I thought all X pipes were unsilenced anyway? The silencers being elsewhere in the exhaust system? Happy to be corrected on this though.
Anyways I don't have one for sale. But if you're wanting more sound without the straight through madness, you could try Jason at Jaren Metalworks? He'll take your existing back boxes, polish them to gleaming, but also remove a load of the wadding from the boxes. It's a half way between straight through madness and standard. Search my content from about 3 years ago and I posted a plug for Jason with pics. Or PM me. Anyway I was very happy with results