The exhaust arrived (with the Bazzaz hidden in the box too). I paid only £28.80 VAT. NO duty was added. Saved me a lot of money importing from the USA. Thanks to Tom at Biohazard, he's a good guy and I'll be using him again in the future.
Read the information that came with your can! My titanium sleeve blew itself to bits at about 10000 miles.
With the savings to be had by buying from the USA I don't know why anyone would shell out a few hundred quid extra and buy a UK exhaust.