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w/ a good cooler, it will easily tolerate a B6T or stock BP. The first stage of mods is to improve the shift feel, and extend the rpm range of each gear. The second stage is to allow the trans to endure more than 150hp/tq. All of the mods leave the trans very liveable on the street. To answer your question about aftermarket parts, no, there are none. However, the first stage of mods IS a shift kit. All they do, is raise the line pressure some, increase shift point, and apply more force to the int band so it doesn't slip. The line pressure and shift points can be tailored by the size of shim used on the springs.
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