I'm currently doing an engine swap from a 300tdi discovery into my defender and the disco has got a cat on the exhaust pipe that I won't be using, anyone recycled one of these at a scrap yard and if so how much money did you get for it?
Keep it in case you ever have an issue with MOT's in the future (you are now supposed to have a CAT fitted if it was there at original build). I know a lot of testers aren't really bothered but if they tighten up on the regs in the future it could be worth more. Mine 'should' have one but hasn't and got through last MOT ok.