there was a nos oval panel on
www.trademe.co.nz for ages but i can't see it there now.
it was for sale from one of the vw places over there. hopefully someone here will remember which one.
or
http://www.vicsbahn.com/nos.htm
5th pic on the rhs. just get a bucket of KY first.
edit: andrew dodd had some front 1/4's but nfi if they were oval or later.
if you are anal about correctness you want a '58? down panel as after that the rib over the tierod arch changes from being pressed in to pressed out or vice versa. i'd imagine that after '60 when they went to the pressed shelf behind the spare tyre the 1/4 panel would have changed a lot more.
there may be other changes 54 - 58 as well.