Parts for e12/e28/e24

Someone have tips on where I can get used parts in germany?

I need
- black sport leather interior from the e28 (front and rear seat)
- Spring struts (Veerelement?) from the 6-serie up to 1982
- "Achteras" from early 635
-"Stikaas"? from early 735, 745, 635 or e12 m535i ( don't know the english word. "Drive-axles" ?)
-other e12-535 parts

Glenn Simon Storsveen
Norway