Thanks for the picture. I wish it was a little sharper. It makes the details a little harder to read.
Taking the cars from the rear. No. 3 appears to me to have paired windows, which would make it one of the sleepers.
No. 2 does look like a Bowers, Dure Car.
No. 1 is a bit of a mystery to me. Robert McFarland asked if it was 2nd #2. That would be a New York Elevated car, of which they bought six, the other cars becoming 11-15. The identifying features I see are 17 windows, 8 clerestory windows and a center smoke stack. I have not identified any DSP&P car with those features.
The only Elevated car on the South Park I have seen is the car on the ground at Bailey Identified by Ron Rudnick. Looking at pictures of NY Elevated cars they had a center door, no platform steps, and do have the eight Clerestory vents. There were also eight windows on each side of the center door. If they had rebuilt the car with a window where the door went that would give you 17 windows but the center window would be wider and the center window on this car appears the same width. The smoke stack is placed where the door would have been.
If this is a NY Elevated it has had a lot of work done on it.