For what it's worth, I absolutely love the SPEC 3+ in my early T56. I only had about 425lbft in my last 355 combo, but I beat the ever loving piss out of it since 2007, with zero issues. It held better than the stock 8.5" rear did on drag radials. Haha
I'm saving it for my current 383 build and don't expect problems. SPEC rated it at 800lbft iirc.
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