There is no difference in the gears or carrier on a 30 vs 28 spline front. Only change was the axleshafts and spider gears. I will be getting a 4.56 front 10 bolt shortly on a trade. I need to call my friend and see if its been pulled yet. But as soon as I have it I'll be asking $100 obo for the housing with gears setup (or $100 for the gears and carrier and I'll toss the housing).