The individual Jeep CJ wiper motors are a good choice. You need wipers that have about a 90 degree swing, and they have to be oriented correctly with short blades.

Most modern wipers have the wipers going in the same direction, which takes some creative doing to correct, or the ones the have the wipers sweep towards each other (like your 47 Plymouth have) have too much wiper movement and very long blades and the blades run off your glass in nearly every direction. Gene