The Testors 1/48th OV-10A Bronco has three-bladed props and spinners that look "right." And the kit is inexpensive enough that you don't mind consigning the rest of it to your spare parts stash. (Or mail it to Madman Eddie Miller for one of his crazy kitbashes! )
By the way, the Signifer Goose also comes with the earlier, two-blade props, so that's not the answer to building an accurate "Cutter's Goose."
Also, have you noticed that there's a 1/48th model of Bon Chance Louie's Citroen available?