700E and 773 Parts purchased directly from Lionel some time ago:

690-700E-009 Trailer Truck Rear Wheel - Quantity 4

690-700E-Trailer Truck Pivot Screw - Quantity 2

600-0773-069 Rear Truck Spring  - Quantity 4

600-0773-086 Retaining Trailer Truck Stud - Quantity 2

600-0773-087 Drawbar- Quantity 1

P 49