The Sounds of the Caledonian Sleeper (66301 & 73971)

As it can be a hectic time of year about now, have some sounds from the sleeper train to relax a bit. For me, the sleeper signifies the start of a great adventure (and is so exciting that I can hardly sleep!), and as we head into 2025, may there be many more!
Operator: Caledonian Sleeper
Type: Class 66 (Electro-Motive Diesel JT42CWR) & Class 73 (English Electric)
Loco Numbers: 66301 & 73971
Introduced: 2008 (66301) & 1965 (73971)
Engines: 1x EMD 12N-710G3B-EC (139.6 litres, V12, 3200hp) (66301) & 1x MTU 8V 4000 R43L (38.1 litres, V8, 1600hp) (73971)
Traction Motors: 6x EMD D43TRC (413.3hp per motor, 2480hp total) (66301)
Recorded on the 9th and 10th of January 2024.
I hope you all enjoy the video!

[@TheKitchenTableGamer]

That's a setup I haven't seen before!

[@ThingsWithEngines]

I've certainly not seen it anywhere else!