1966 Barracuda radiator shroud / cooling questions

The '64-6 273 engine actually came with a rigid 6 blade fan unless it had factory A/C. I like those the best as they pull plenty of air and they won't grenade like some flex fans will. I don't like the clutch fans for the same reason....the clutch can go bad and come apart. If you don't care about the appearence of a non-stock item in the engine bay, I'd add the overflow bottle. It gives you max coolant without puking excess on the ground. Adding a shroud might improve your overheating problem but it also may just mask an underlying problem that should be fixed first. A car w/o A/C shouldn't need one.