Rear wheelhousing

[Ekin_Su_Ocha]

Hi there,
I'm just working on my '75 316 and started with the body works.
The rear wheelhousing is almost OK...almost. The tower is rusty and I cannot save it. I tried to find the replacement part but I can't find on the entire internet.
I decided to create this part from sheetmetal.
Does anybody know the thickness of this part? (see link). I hope the tower itself can be reused...and I have 1mm thick sheetmetal for creating the rest of the wheelhousing.

Any hint, remark or useful feedback are welcome!
Thanks in advance!

https://www.wallothnesch.com/karosserie ... 41-17.html

[uwbuurman]

The outer skin is normal 1mm sheet metal. But the dome itselve is a plate about 3 x 5 inch with the dome that holds the strut. That is substantially thicker. At least 2,5 or 3mm.