I know this sounds like the same questions just posed by mad txn, but I live in Germany, even though I am doing a 6 month tad assignment to OSAN AFB right now. In Germany, mufflers are hard to find for American Cars. What I need from you guys who have had duals installed is advice. My thoughts are to replace the two rear-ward mufflers with one flowmaster and run dual pipes, no mufflers from there. Will that be too loud? What are you suggestions for a guy who is approaching 40 and still loves to hear his engine purr. By the way, I drive over 100 mph every day and my tach barely hits 3k doing it. Your cooperation and specifications in this matter will be greatly appreciated.