Quote:
Originally Posted by thefro526
Some people upgrade to a Q45 rear differential since it's technically an R200 diff but has the stronger 30 spline axles as a Twin Turbo Z32. The rear end gear is also much taller than most S-Chassis diffs so it might help if you're making a ton of power. IIRC to complete the swap you need a combination of Q45 and Z32TT axles, Z32 TT hubs, a Q45 diff and the correct cover for your subframe.
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Q45 really use the bigger axle splines? So that means you'd have to change the hubs to Z32TT to fit the larger splines? The folks I knew who were twisting the R200 axle splines all converted to the GTR/Z32TT R230 rear end on their S-chassis. Changed subframe and everything else to fit the larger diff housing, axle and hubs.