Covered in these threads:

http://www.classicsaab.net/phpBB2/viewtopic.php?t=742

http://www.saabcentral.com/forums/showthread.php?t=117928

Pictures of some of the work to remove A/C and install the new cabin filter
can be found at:

http://www.classicsaab.net/gallery2/main.php?g2_itemId=9997

Currently the text commentary isn't completed but that's coming next! I
might even create a new project page for this since it seems like something
quite a lot of people consider doing.

Craig.
--
Craig's Saab C900 Page at | Craig's Classic Saab Workshop - Sydney .au
http://lios.apana.org.au/~c900 | http://www.classicsaab.net and other URL's
Email: c900 (AT) lios (DOT) apana.org.au | For Saab 99/C900/9000 Enthusiasts World-Wide!
Alternate: saabonaut (AT) gmail (DOT) com | Web-forums, galleries, library, links, etc.