Incorrect fan shroud on my 1967 Dart 318?

I have a ‘67 273 V8 radiator 2785973. My fan is an unknown aftermarket aluminum one installed by a prior owner. I’ll have to take some measurements once I pull the old shroud out. Thanks everyone.

It shouldn't be that hard to find the correct fan, if that flex fan turns out not to fit. But the standard 4-blade base fan would probably not be as effective.