@ Spatz85 Dankeschön
@ Mekka, schön!
Respect for the work you have done.
Do you know if the air filter box of the Forester is different to the Impreza one?
The rear diffuser is not an original equipment but the previous owner fitted an Impreza one.
But there is a Cusco one available that goes with a stabilisation bar that is "plug n play".
By the way if you plan to buy the bumpers etc. japanparts have a 15% discount until the end of March.
P.S. Excuse the english but my german is too limited