Now there's the man we needed to hear from!
Someone who has actually broken parts will know what works. I've never broken an 8 3/4 because I have never seriously abused one, but I did twist a few axles in 9" Fords in my mud racing days. 28 spline axles if anyone cares. I'd have to rank axle failures as the single most likely failure, followed by ring gears and pinion shaft failures bring up the rear.
