56 Olds air cleaner wanted! (The real one!)

We all know that the 56 Olds air cleaners look like the Cadillac ones, B U T
the back side is not round, it is FLAT!

I need such an air cleaner, Cadillac style, but flat at the back as per the photos attached!

Anyone out there who can help?

Thanks
The_German

 

Nobody out there who can help??? Pleeeeaaase! No chance to find that stuff here in Germany!
Thanks
brgds
The_German

 

maybe check the classifieds. but i think i got a base here

 

Check your PM's