The whole exhaust without cats was £1300, but that's because I wanted the same diameter pipes as stock which had to be ordered from the USA, and also because I was a bit nitpicky about the exhaust tips which required extra man hours to get how I want them. I think his original quote was £800 that was with slightly larger piping he could get from the UK.
Of course add to that the price of HJS cats or cats of your choice.
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