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I have heard of several folks doing the swap from an auto to a manual (either stock 4 speed and Getrag 5 speed), and even know of one locally. John Warga just got his Getrag today via the Kathryn McCoy OGTS express (but that is another story, for later this evening).

But I have never heard of a conversion to an overdrive auto. Is there such a transmission available that would fit a CIH engine? The stock auto is a TH-180 GM transmission, identical internally to many other smaller GM automatics. But did GM (or Opel) ever make an auto 4 speed w/ OD to fit the CIH engine, such as the Kadett C or Manta B?
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