Here is a Lionel 6-14500 O Gauge KCS F3 AA Diesel Locomotive Set with Command #2388 from 2001

Trainz Product Id: 11442136

The locomotive has Telex couplers front and rear that can each be controlled separately in digital operation

all metal wheels and gears

Trainz Product Id: 12487956

Bachmann 64303 HO Norfolk Southern F7A Diesel Locomotive Sound/DCC #4271 ProductID_12318014 Here is a Lionel 6-14500This is Bachmann 64303 HO F7A Norfolk Southern #4271 DCC Sound. F7 A diesel locomotive. The EMD F7 was 1,500 horsepower diesel electric locomotive produced between February 1949 and December 1953 by the Electro Motive Division of General Motors and General Motors Diesel. This locomotive was originally promoted by EMD as a freight hauling unit, the F7 was also used in passenger service. The F7 was the fourth model in GM EMD's successful line of F unit