Typically, I take my car to Dan Martin for all its service needs; however, I have decided to do a quad exhaust on my 3 and am not sure if his shop can do the work (I will call him tomorrow to find out).

Is there any shop in the Bethesda/Rockville area that you guys would suggest giving a call?

Basicly, I am just going to have them take off my current Hamann muffler+tips, put on a y-pipe to run tubing to both the current exhaust cut out and tubing to the passenger side where I am going to have them cut for a second set of exhaust tips... then, to quiet things down, and act as a muffler for added backpressure, I am going to have them put glasspacks between the y-pipe and each sets of tips... seems basic enough but I don't want to go to midas or any chain shop like that...

Any suggestions?

Besides Dan, the only shops I can think of are Curry's and Gary Martin's shop in VA.