Cross referencing Saab parts with other parts

I just saw that Saab USA parts, which is an online business of the dealer Shaw Saab in Massachusetts (USA), has stopped taking orders because they are not getting parts from Sweden. Hopefully, this will be temporary.

I saw somebody else mention this in another forum after they were trying to find parts for routine maintenance.

I am starting a list of alternate parts. As time goes on, we can adjust the format of reporting information.

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Saab 9-3 rubber oil plug gasket, part 3536966
Use: 2.0 (175, 210 hp) engine

Suspected replacement (similar appearance)
Dorman 66451 for a Chevrolet Cobalt, size M12 x 1.75mm (Rock Auto $0.86, $7.70 for 10)

This part probably isn't on 9-3s but I found out that the Coolant Bypass Valve on the 9-5s are the same as on the Caddy Catera.
AC Delco# 1550574