[camarojoe]

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Tach was included with COPO 9737, along with the center fuel gauge and 140 speedo, starting in late May. My car is 05D and has the factory tach.
Unless I'm mistaken, all the late Yenko cars came with a factory tach, and most if not all non-9737 cars came without a tach.
Andy

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While not related to the 9737 package, you are correct in saying that later Yenko cars were ordered with the U16 tach and center fuel gauge (non console) However...many non-Yenko delivered COPO 9737 cars could have been (and likely were) built without the U16 tach option, even after 05D.