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I have the SUPRA 3.76LSD on my 93 SC400 AUTO, drives like normal, but the rear wheels don't spin like before with the open diff. It's not 100% full proof, but the car goes where you want it to, especially around slick or wet corners.
Thanks for the input. A week or so ago, I was really leaning toward the clutch-based LSD units. However, I am currently leaning toward the Torsen because of it being less likely to require maintenance or replacement. the 1yr/12k mile warranty from TRD is not exactly confidence building.
In the meantime, I am think I am going to spend my two grand on some rims. I am putting the LSD upgrade on the back burner...but, a new Torsen from the dealer is going to be my choice.