Great airplane connie. Lotta love went into that one by the looks of it. That one has the toothpick props, which made 'em a little faster than the ones with the paddle blades. We had one, CF-ORD, that we bought from an automobile manufacturer that shall remain nameless. It had both the toothpick props and the 1830-94 engines. Same 1200 hp max power but you could run them at a higher cruise power setting. We used to file 150 kt if I remember right, as opposed to 140 with our standard DC-3's. That engine/prop combination along with a rudder servo tab allowed you to use 26,900 lb MTOW in the passenger config, same as the freighter version of our standard DC-3's.
Just as a footnote, our standard DC-3's were equipped with 1830-92S engines. These were -92's with -94 cylinders. The only external difference on the airplane was the cowl flaps didn't go all the way around the circumference of the cowling, only the lower half. We used two of our DC-3's on skis in the winter, did a couple of hundred hours each with 'em. In the summer, we swapped the engines with the two PBY's we operated when the '3's were not being used.