Cooling Issue - 1964 Dart GT - 273 with automatic and A/C
As for rare: yep, pre-'67 A-body fan shrouds are all rare, and the earlier the build year the rarer they get. That said, I'm guessing fairly good odds there might be one at one or another of the Arizona old-car yards, or maybe hanging on the wall at Wildcat. If someone were to happen upon one, it would not be difficult to reproduce.
Given the choice, I'll take limited efficacy over no efficacy (no shroud).
As for rare: yep, pre-'67 A-body fan shrouds are all rare, and the earlier the build year the rarer they get. That said, I'm guessing fairly good odds there might be one at one or another of the Arizona old-car yards, or maybe hanging on the wall at Wildcat. If someone were to happen upon one, it would not be difficult to reproduce.