Thanks for the answers. I've seen pictures and read about them but I was after someone who may have bought one and running it on their 370Z. Much better to get a view from an owner than a sales pitch from the makers or reseller.
There's a single clip on youtube
YouTube - 370z exhaust sound which certainly doesn't sound stock to me and the Scorpion is about half the price of Stillen/Berk over here.
As for asking about British made exhaust, there's people on here who aren't from the US and also people who have parts imported through overseas resellers and personal exports so thought it was a reasonable question.
Cheers guys.