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This is where the whole issue gets murky. The flat P 357 has a different original purpose, but can be used to calibrate backlash on Sporto transmissions, but even for that it requires that a new hole be drilled at a distance (center to center) of 10mm further away from the axle than the original hole. That means, using Grady's measurement, that the total distance for Sporto use becomes 80.6mm.
The P 259, with the bend, was made to use on 911s, and has a measurement different, and roughly in between, the P 357 or the P 357 modified for Sporto use.
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Keep the Shiny Side UP!
Pete Z.
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