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Granatelli Motorsports Granspeedo Speedometer Calibrator p/n 760000, New in the box. I bought this in 2003 or so and never ended up using it because the clutches in my 4t60e were shot. I bought this from Jeg's or Summit, I can't remember. I'm asking $100 plus shipping. I'm also going to post this locally on CL. Works on GM vehicles from 94-06 except C5/C6 Vette, Cadillac CTS, STS & V-Series
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