I bet everyone here will tell you to go with the 4.10's and rightly so. Mine used to be an aod and i had both gearsets. The difference is night and day. I loved it. But I loved it twice as much when i finally got rid of that oversized paperweight behind my engine and inserted a manual z-rated t5.
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1987 black with t-tops. Cobra intake, 1.7 cobra crane rollers, gt40p's, bbk shorties, off road h-pipe, Holley adj. fuel pressure regulator, Tremec t-5z, 65mm TB, 4.10's, adj cable, 155lph fuel pump, Ram clutch kit, 3 row motorsport radiator,
275-60-15 BFG TA's on Welds, Hurst shifter,Former AOD Semper Fi
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