STEREO UPGRADE...BASS PORTS

[AUDI1OO@aol.com]

Hey Guys (as well as Gals),

Has anyone made upgrades in their stereo systems; if so ever consider bass
ports to relieve the tension in the trunk (i.e. port from trunk to inside of
vehicle)?  I am considering this but would like expert Audi opinions.  Does
anyone know where I can make the port?  How big should it be?  Should I make
multiple ports?  I have a 1991 Audi 100; any information will be greatly
appreciated.  So far I have considered the "Ski bag" and the "earphone
thingamagig" in the rear of my car as possible places for ports without
devaluing my car.  Any comments?  I am also considering using dynamat in the
trunk...Has anyone ever used this stuff?  Where is the best spots to put it?  

Thanks,
N.P.
1991 Audi 100