This is kind of a repeat post, so appologies in advance, but as they tend to go off on tangents i thought id put another on as need to clarify something please. . I have a 1.9 tdi b6 avant. im looking to change the single exhaust for a dual tailpipe, like the s4 and 1.8t etc. Im struggling to find out which ones will fit ive had a quick look under mine, its got a single back box that goes to another silencer thats sideways on further down the car. ive looked at some 1.8 t exhausts on ebay and the look different shapes? anyone got any advice please?