As an alternate, out of the box idea, the C-Body Dry Dock web site has a tech article on fitting a Ford Explorer radiator into a C-body.

Here's the link to page 2 with pics:

http://www.cbodydrydock.com/content.php?article.7.1

The Spectra brand on Rockauto.com is cheap:

SPECTRA PREMIUM Part # CU2173 {#2173}
OHV; Automatic trans. [May substitute alternate brand -- same quality & warranty]
$121.79