I work for larkspeed so i got it all though work. The price is £629.00 for a manifold, de-cat and cat back or £841 for manifold, sports cat and cat back. I would go for the manifold (4-1), de cat and the cat back with tail or your choice and then get an extra flexi pipe whitch is about £30 and get a exhaust company/garage to make the new flexi fit your standard cat so then you have always got it to put it on e.g mot time lol. mongoose is a very good system and i would recomended it to anyone plus its cheeper then the milltek one plus at larkspeed we can do price matches so if you see it cheeper anywhere else i should be able to match it and help you out.