Never seen a 308 before. There was one on ebay last night that I kinda wish I had acquired. 308 is an Atlantic and according to my chart had choo choo but no smoke unit. Front pulmor wheels. This one looked fine and looked complete, it was untested. It only went for $18.00 plus shipping. Would have been worth that just to have a different cab number. 308 came with knuckle coupler. Plastic body.