I did ask CCM a few months ago, it may be the pipes are no longer on offer (it didn’t sound like the prospect of Austin supporting the Spitfire range going forward). I asked if they were street legal – as the standard exhaust isn’t exactly quiet & something with the word “race” in it’s title didn’t have the “honest officer, they ARE legal” feel of convincing Plod.
If anyone finds some good pipes out there – pass on the message. I like the stock tubes, but classic silencers (reverse cone meggers) could be good looking on a Spitfire (6).