I just measured my '85 Westy's hub to bottom of fenderwell distance.  I
measured from centered of each hub vertically to lower edge of each wheel
well.

In front I got 17 15/16 in and rear 16 1/2 in.  Differences left-to-right
were within 1/16 in.

What are the distances on your Syncro?

Thanks,

Chris.