surely if its a de cat you'll have to put a cat on for the mot?? i think big bucket looking exhausts can look a bit kevvy though,more suited to 17 year olds with saxo's,corsas or puntos so be careful.i remember seeing a saxo once that had what can only be described as an ice cream tub sticking out of his bumper.me and my mate pulled up by it to take photographs whilst !Removed! ourselves laffing.the little chav wasnt impressed.funny as fook. i'm all up for mods,just tasteful mods.to me if a car looks standardish and you have a drag race from the lights and it kills you hands down then i think wow.if i pull up next to a neon light,racing stripe,bucket exhaust,too big alloys,dump valve,massive spoilered idiot in a punto with his stereo fartin all over the place then 2 words come to mind.haha.go for it mate just be careful it aint gonna look silly.if your over 24 i wouldnt bother either