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Re: 88-98 rearend in a 78 1/2 ton ?
The '88 and up are 30 spline Vs. 28 which should make them a little stronger. For whatever that's worth. I have the '88 axles and carrier in my '84 10 bolt. If I remember correctly the axles were about 7/16" longer which does push the wheels out a bit. I have not noticed a difference in the turning radius, which wasn't great to begin with.
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