Long Life Exhausts have just quoted me £169 to build a stainless rear box onto my ZT 160 V6. Now with garages quoting £170 for an OEM mild steel one this looks a good deal. I can choose the exhaust note and decibel level and also tail pipe style although the price quoted is for a standard single tail pipe. from the CAT back would be £300 odd. Oh yes and they will lend me a car while mine is done !