Sorry for radio silence, chaps: was away on holiday! Anyway, their website is
www.solid-fabrications.co.uk and Alan's number is 07951 642450.
Viper - cost for my boxes was £350 the pair, but I think he may quote up to 400, as mine were a prototype/experiment. My system is still relatively quiet - around the level of the Librands quad exit on my S1, so I think you'd want the bomb type silencers rather than mine which are still baffled boxes, albeit smaller than the poor Morgan originals. My current car is an S2.
Hope that helps!
