I purchased a Rath packing box car at a swap meet recently and would like to know if any one can tell me the Bachman stock number and the year(s) that it was produced. Thanks

HI I am brand new to the forum and have a question. I recently purchased two brand new Big Hauler sets at a very reasonable price and have a question about the locomotive. They look like the anniversary locos but they have plastic rods and valve gear. The set numbers are 90057 and 90082. Can anyone tell me more about these? thanks