If you have a late model water pump that has the lower hose on the passenger side a Heavy Duty-AC 318/340 radiator for a 72 Dart will drop write in, I got mine for bout $170 from Advance Auto. This is a 22" radiator and it cools my 360 in temps up to 100 degrees ambient idling in traffic. It will have mounts for a shroud. I have not found a stock v8 shroud in the bone yard to date but see early 70's \6 AC Darts and Valiants with shrouds quite often. The \6 shroud works if you mount it upside down and elongate the lower mounting holes (top) on the shroud. I have mine set up that way. I'm also using a parts store thermal fan clutch for the 72 Dart and a 17" diameter fan from a early 80's mid size GM v6 (I believe I got mine from a Cutlass or Regal).