Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

Hi all, bit of a Newbie on here first post so hope I'm doing it right and it gets out there!
I'm driving the standard r reg 1.2 merit
I'm kinda looking for some advice on a backbox?
Sportex seem to be pretty reasonable
used to have a cherry bomb fitted and like the sound, sadly the universal flexxy pipe (more like mcdonalds drink straw)
doesn't last forever!

So was looking for any suggestions which you guys thinks best?
Thoughts will be appreciated!

id buy somthing like: http://cgi.ebay.co.uk/VAUXHALL-CORSA-B- ... 29f99ff150

had a simmler one on my corsa (albe it wasnt a twin just single)
easy to fit and sounded awsome