yeh theres no sensors to worry about really but if u can the easiest thing to do is try and get an old cat off another escort then either bash the insides out or straight pipe on that one. thats how i done mine as i needed to weld the pipe to hold it on strong enough. an empty cat sounds pretty nice but very tinny. if u do it like this then u only got four bolts to undo and straight swap come mot time, good luck.