180whp ,there's not much shock load to hurt a gslse axel ,unless you're dropping the clutch at 6k.My opinion is 1.if you want axels go to dutchman ,they're axels are made to order and are quality parts.2 if you want bulletproof use a ford 8' ,they are easy to get ,less weight than a 9" and the 28 spline axels can take 500hp of shock load . I'm using a 8"center section rx2 axle tubes and 8"ends with dutchman axels 4x114 . I'm gonna build a rear end once and move on .I hope that helps.
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