You continue to amaze John. I noticed that the bottom of the tank has a pair of spaces for switches for 3R/2R operation.
So I'm actually in better shape than I thought. I had purchased a S2 parts lot from a forum member over the winter. I have the motors, and I thought only one truck (he said the 2nd was for a Lionel engine). Looks like both are MTH trucks, complete with all gearing, and I was able to mount the motors and install them into the frame.
The rear truck is slightly different and the side frame and rear pilot mounting holes don't line up. I think that this can be overcome with some drilling and tapping new holes.
I will need (2) pick up rollers, the plastic cup it sits in, and the hardware required to put it all together.
Looks like there is a small plastic insulator that both the power and common wires attach to as well.
New front and rear electro-couplers will have to come from Lionel (compatible with ERR).
Take a look at the following pix.
Bob