Morning all, have a 1993 80 estate and would like to update the tired interior. Would the front and back seats from an A4 Avant fit without too much trouble, or even drop straight in? Ideally I'd like to drop black leather seats in, that way if the doorcards are different I could use the existing black (cloth) ones and it shouldn't look too bad. Sport type seats are not much good I'm afraid as I have back problems and find them uncomfortable. Also I'm after a cat bypass pipe, are they available from stock somewhere or would I need to get one fabricated? Sorry for the questions, I'd just like to improve the car a bit!