Cold Case Radiator Shroud?
One of the members designed a nice adapter that fills the gaps of the OEM shroud to make it much more efficient. It didn't look all that complicated. He posted a bunch of pics on these forums. So if you do a search, it should come up. I'm sorry but I can't remember his user name. He's from the Syracuse NY area and installed the same radiator on his Dart GT? I believe.
If the 360 motor and WP have caused the OEM shroud to not fit, then CC has another 22" model for electric fan/shroud kit.