I ended up going to a local radiator shop for my custom radiator.  they can
order any core and modify it as needed.  I decided that having a local shop
was much easier should I need modifications (highly likely).  it cost me
$300 to cut a core in half to make it a cross flow, including the custom
shaped tanks and mounting brackets.  the owner drives a model A roadster to
work every day, so it seems the custom work was no big deal.
Kevin Lane  Portland, OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
(browse w/ internet explorer)

> plenum.  They quoted a cost of $500.00, including mounting two -16 male AN
> fittings, one 1/4"npt female drain hole, and mounting brackets as needed
for
>