Kenworth W900L - 3 Stick Shifting

Please have a look, and share your thoughts. I am quite familiar with a Duplex, Triplex, and several variants of the 5X4. I know years ago, some trucks did run three sticks, although I believe the third stick was usually for a 2-speed axle/axles. I can't figure this one out, and I almost suspect it may be a fake, although the sound does match up pretty well. I also suspect that, in this day and age, DOT would never a

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