The double-archbar swing-motion truck used by the Canada Atlantic, Grand Trunk and various other railways.
The model is optimized for Proto:64 NWSL wheelsets on 1.27" axles. It may work for regular S scale as well.
You may find that the brake beams need straightening, but will bend back into shape with a little coaxing. Don't try for a sharp bend as the material will break.
4.73 w x
3.652 d x
1.862 w x
1.438 d x