I always ran the aluminum rads like summit sells and I would only see 200+ sitting in traffic on hot days. No shroud on any of them. They sell aluminum rads with brackets already mount that bolt right in the stock location for around 200. To me that's the way to go.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram