For sale is these Trainworld Custom Run Santa Fe F3 ABA. This set up has been modified. Originally from Trainworld you could buy Powered A (20-21616-1) Unpowered A (20-21617-1) and unpowered B unit(20-21616-3). The unpowered A (27) unit in the set has been swapped out with another Powered A unit(20-21616-1) from the same production run. So instead, Both A Units are Powered. The Modified A unit will come up as the same name as the original A Unit. All the items are cosmetically in good shape. No defects or damage. The Modified A is in its original box. There will be a note on the box that it is a Powered unit instead.