Thank you for your reply. Actually, no, the Railking number is 30-1219-1. While it is an Allegheny 2-6-6-6, it is lettered and numbered for Santa Fe. I am sure though that they are the same model and the part is correct. I went to my local MTH authorized repair station on Saturday and we determined that the best thing to do was to order the two trucks, leading and trailing. The engine was knocked from the shelf by my cat and hit the floor pretty hard. The trucks show some damage and may have been bent, cracked etc. which is why the bearings came out. I wish that parts diagrams were available online from MTH....I would have looked them up myself.
I truly appreciate your response. If the trucks are not available, I'll go the parts route.