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[SSDiv6]

Originally Posted by Rory McNeil

Unless the rules have changed, how does a General Motors automatic transmission bolt up to a Toyota (or BMW) engine, and even more curious, how does a Japanese car get around that pesky rule that has always required the transmission (and rearend) being used, to be of the same manufacturer as the car? Or did Toyota buy GM while nobody was looking? I really doubt that this so called "Production" Toyota car is available at the Toyota dealership with a GM Turbo 400 transmission connecting the engine to the , I assume, Toyota rear axle assembly.

Rory,
It is the same situation when cars that were available with a Powerglide only, were allowed to run a 3-speed auto. In the case of this car, it is available with a GM transmission from the factory. Therefore, they are applying the same rule as allowing to run a TH-200 in lieu of the OEM TH-350 or TH-400. Even if GUMP ran the OEM GM transmission, there are already parts such as high performance valve bodies and torque converters in the market. Also, Sonnax and TransGo make high performance internal components for the OEM transmission.