I see these wheels come up for sale occassionally on Ebay, both
14's and 15's. I would recommend not going bigger than 15 x 15.5. Don't want to sell mine, but you might seek a seller via
the 356 Registry Talk list, sign up at:
http://www.356registry.org/
Sign up for the Talk list, which is a email list. Send an email
to the common email address, and 1500+ guys get it. Good
place to find stuff and get advice on 356's and parts. Also
try the 912 Registry at:
http://www.356registry.org/
Post a wanted ad.
Regards,
Charlie White
Scottsdale, Arizona USA