What can I do to mount the rear license plate?  The original plate holder was never meant for USA-format plates and the body holes don't line up!

Tough question!  Try this:  the next time you are at a junk yard, look for a Fiat 124 convertible.  I've found they have an aluminum rear plate holder that fits perfectly on the T34.  If you can't find a Fiat, try Bill and Steve's.