You can pick up the repro bell up from a lot of dealers, I would just google Prewar train parts Bell (Hennins Trains is one). I do not know if this engine had a brass or nickle plated bell.
Looks like your missing a pickup roller. If you need to replace it you will have to remove the wheels spread the frame then slid the pickup assembly out. If you do order one, go for the copper one and the one that come not assembled. This way you can remove the Lionel bag from the old pickup assembly and remount it on the new. This is not hard to do and looks nice. plus when your at it you can always rewire the engine. Rewiring will avoid cracked wires and prevent shorts. Just a suggestion.
