What we know so far:
didn't someone once say that Janspeed actually made the Vauxhall sports box?
Elise forums seem to rate the Janspeed although say it is very loud.
(From the Elise FAQ) Janspeed is loud and raspy, it's also relatively small & easy to fit. This seems to be one of the loudest exhausts ... The Janspeed stainless steel exhaust is "for track use only".
(From Janspeed) We do manufacture an exhaust system for the VX220, but not for Vauxhall direct. We retail them at £319.14 plus VAT and the Sports Car retails at £238.28 plus VAT. Both are in stainless steel and have life time warranty.
I've asked for a photo of the exhaust system and have got:
I have passed your email to Tom Ross our Technical Director, who will come back to you with some additional information.
So we shall have to wait and see. if anyone lives near Salisbury where Janspeed are based, perhaps they could pop in, take a few photos and get some more info? if anyone has one of these suckers already fitted then lets hear from you!
Ben