Went with 3.08 gears in the 12 bolt. Axles had too much runout so new ones went in. I went with rubber bushings because I had issues with urethane bushings in another car. On these A bodys the rear suspension goes into a bind condition as the suspension travels. The rubber bushings give to account for that. Urethane does not give. I destroyed a set of upper control arms on a car that had urethane bushings. I did beat on that one pretty good.
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