I have had duals installed by Midas on my 70 Newport and my 72 Imperial with no problems at all. No resonators either and I am not sure what the noise problem seems to be unless you want whisper quiet. For myself a big block Mopar, be it Imperial or otherwise, needs to breathe and express itself. Both have H pipes as this is fairly standard for increased torque and are 2 1/2 " systems. It is a bit expensive at Midas but they do a good job and have good warranty. Single exhaust just chokes that engine,duals are one of the simplest mods to increase efficiency. R. Giesbrecht ello all; This is somewhat of a dumb question but since the fuselage cars can't fit a dual exhaust easily could one just use a larger diameter single pipe? I know that the dual pipes are used for cutting down on the back pressure but could you achieve similar results by using, lets say, a 4''inch single in place of a 2-1\4'' single? Just speculating, I don't even know if you could get a 4'' pipe or the muffler to fit it. Best Regards Arran Foster 1954 Imperial Newport Needing A Left Side Taillight Bezel and other trim parts. ----- Original Message ----- From: "Elijah Scott" <imperial1971@xxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Friday, January 03, 2003 10:03 AM Subject: Re: IML: Exhaust Question.... _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail