They are SW-1500 weathered bogies/trucks (one for the front and one for the rear) that carry 2Wayne's ID. They are 2Wayne repaints of trucks created by MSP. Go to 2wayne.com and look under downloads. Then look under Dependencies. There are two files (Set1 Bogies and Set2 Bogies) that say they are for the SW-1500's. Probably one of these files contains your missing bogies.
