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Get your rear-end waxed.
get a posi traction rear end and swap it out.
A posi rear end (positive traction) drives both rear wheels.a posi rear end is when both rear tires spin instead of just one
A 393 gear rear end would be quicker than a 300 gear rear end but the 300 gear rear end would be faster in the long run.
Call the police! :)