Andy - I am starting from scratch, I have an empty engine bay and a long block. No radiator, no water pump/housing, no damper, no pulleys, no alternator. I do not have the stock stuff. And after pricing out stock pump and housing on ebay, about $40 each used, plus shipping.. it wasnt too much more to get the new mancini aluminum pump and housing. Im going to try them out.

Ahy - In my price range I've only seen Champion and Spectra.

The spectra is copper/brass 3 core. 25" core width
http://www.summitracing.com/parts/sgt-cu332/overview/make/chrysler

Champion has a few I can afford. 3 or 4 core aluminum. 26" core width. I think these must be used with electric fans though
http://www.championradiators.com/dodge-charger-26-inch-big-block-radiator-1966-1973