Dead Cat/Exhaust - Need Help

[kzildjian at home.com]

Hello All,
  Turns out the cat on my 1990 Coupe Quattro (A014304 VIN) is dead.  As
a matter of fact, it has nothing inside!  I went through inspection and
failed.  I replaced the O2 sensor, and brought the COs do a little bit,
but not enough.  

  I want to replace the entire exhaust with a performance exhaust and a
new cat.  Can someone suggest some exhausts.  Thank You.            
-- 
Tim Meritzis         
TCM Productions 
1990 Audi CQ 20V
1984 Subaru Brat D/L 
(732) 241-2931