Catalytic converter questions

[rander07@interserv.com]

Audians,

I have an '87 5kQuattro w/ 130k, and I think I am in need of a new catalytic 
converter.  It makes that pebble in a tin can noise above 2,000 RPM in the 
general vicinity.  

I am selling the car soon, and the prospect of buying a $400 cat. for a $3500 
car is proposterous.  I understand it is a heavy fine (like $10k) if I remove it 
& put a pipe through to the first muffler.
Any inexpensive alternatives to a new Audi cat?  HELP

Also, I need a new electric window motor & regulator on the driver's door.  I am 
in Portland, OR, and would like to find this from a junkyard.  Any PacNW 
Audians, please sport me some connections of where to look.

Robert Anderson