Thanks so much, you fixed the high speed vibration I had in my 1966 mustang fastback, 347 stroker, TKO 600 5-speed, 9 inch locker rear with 3.89 gears with 18 inch shelby rims.. This car now runs smooth at any speed....I have tried 3 different shafts!!...
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John C ~ Proctorville , OH
