Thanks everyone, I will have a go at one of the suggestions. I will let you know how I get on.
If you don't want to trash your stock pipes, I have a pair of factory 'Noisy' pipes, which are without the 2 rear weld-in baffles, so flow better than the bunged up stock items, plus add some much required growl to the car. If after that you wanted more noise, then you could simply hole-cut through the one remaining baffle and have super-loud (and flow-worthy) straight-throughs.
PM me if interested.
