My exhaust and cat are kaput on my 16v, and have order K-tec slash cut stainless with decat. However car is a 94 and am resigned to fact that cat will have to go back on for next mot. Now my mate pranged his dads megane which was an R-plate, but i reckon cat would have survived, although havent yet looked. Anybody want to save me the hassle of crawling under a smashed motor, and tell me whether renault cats are interchangable. Can I take the one of that Megane and use it come MOT time.