Thanks again for the advice! I didn't know what to look for with the mirrors. I did some searches on old truck mirrors on google but nothing like mine showed up. With the correct name of the mirrors I did find a lot of them thanks!
I'll order the chambers from Ryder fleet I think.
Another question; I've got 19,5 wheel up front and 22,5 at back. I really would like to have 22,5 at the front as well. Over here I can't find the correct bolt pattern (6 lugs) but a friend of mine offered to cut out the centers of the 19,5 wheel en weld them in some 22,5 wheel he has laying around. Would this be i wise route to take or does anybody know where to find 22,5 wheel that can be shipped to The Netherlands