Wiring harness for Bose stereo

[TM]

Hi listers,
Can anyone tell me if there is a plug in wiring harness
available for the '91 200q20v that is equipped w/ factory
Bose?

I am looking for a harness that will allow me to connect an
aftermarket Sony headunit with the Bose harness, although I
will be using outboard amps and replacing the speakers, so
I don't need a Bose amp interface.

If there is anything made like that, please email me ASAP.
I know that neither Metra nor Scosche have this listed in their
application guides.

Taka
'91 200q needing a stereo upgrade