Help: 88 Caddy ac compressor: which one is it?

1988 Cadillac Sedan Deville, 4.5L
The model number on the compressor is 1136007. Is this the HR-6 compressor?
Does anyone know which other GM cars used this model so I can search the local
junk yards for another unit?
This one just stopped compressing yesterday, one month after converting to 134a. Up to then it worked very good. I can now easily spin the clutch plate with my finger.
Thanks Bill remove all "f"'s from address
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.