Bill Verburg

The only Porsche that I know of that ran large spacers was 930 rear, early 930s also ran a fair sized one though 1/2 the size of the rear until they redesigned the front spindles in '80.
21mm front spacer 930.341.611.00
54mm rear spacer 930.331.911.04



Porsche needed a special dispensation from Tüv to run the large rear spacers.

In general I try to avoid any spacers, they add weight, reduce rigidity and can introduce rotational issues.