Worked out from the recall campaigns and bulletins that list both. It does not mean a part or a repair for one fits the other.
Trims
Cowl Chassis
Incomplete - Commercial Bus Chassis
Engines
3.9L Diesel
Eighth VIN character K
5.7L V8
Eighth VIN character R
6.0L V8
Eighth VIN character P
6.5L V8 Diesel
Eighth VIN character F
6.6L Diesel
Eighth VIN character J
7.0L V8
Eighth VIN character M
7.1L Diesel
Eighth VIN character 2
7.2L Turbo Diesel
Eighth VIN character C
7.4L V8
Eighth VIN character B or D
7.8L Turbo Diesel
Eighth VIN character 3
8.1L V8
Eighth VIN character E
Position 8 of a VIN names the engine on many vehicles: how to read a VIN. Safety equipment depends on the trim, so decode a VIN to see what one vehicle has.