Yes, the smaller axle tubes will make it easier to use the 8 3/4 shock plates and u-bolts. Mine had the 3.25" tubes and took some convincing to get the u-bolts on. NAPA has U bolts for the 3.25" axle tubes and they fit right through a factory Mopar shock plate w/ no grinding.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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