When I bought my 86 ECSS back in 2009 , it had single exhaust plugged into a Flowmaster mounted sideways in the rear with 2 short pipes coming out of the muffler with big chrome tips . It was very loud with a bad drone . You couldn't hear the radio/ CD player or talk to your passenger sitting right next to you even with the windows up .Sooo...after all this time & many long trips to car shows all over Florida I finally had it done . Now I have TRUE dual exhaust with 2 Magnaflows & a new tranny X member & reused my tips . It idles quieter & cruises quieter & when you punch it , it is louder , I can now hear the radio & talk even with the windows down ! & no drone , they have a completely different sound . Before you ask I don't know which Magnaflow it is but is supposed to be a quieter one & I don't know what X member it is either . I wanted to take pictures up on the rack , before & after but they were very busy in the shop . If I ever get it up on a rack again I will . I ordered a bunch of small parts & will be fixing a lot of minor problems with the Elky now . Hope to see youall at the next show we go to .