No torque estimates. It was $350 for a new R&P(OEM) and $425 for a heat treated set. I figure that it should make them last quite a bit longer and hopefully be able to withstand the power. Also, less burnouts. A lot less burnouts.
Also-
bearings for just the output shaft were about $250, plus the labor to swap diffs, replace bearings/ring/pinion, reseal everything.