dsinned, I must admit: that is a rather unusual wish! /phpBB/images/smiles/icon_smile.gif Most people (I included) crave for mind bending acceleration and in this respect, you could not make the gears short enough (numerically higher) for me. I test the acceleration of my car every half chance I get, and while top speed is certainly a benchmark for high performance cars, it is one aspect that most drivers will never safely (or legally) explore. That said, with the 3.15 rear, the Z will definitely hit 180 mph and likely flirt with 185 mph at redline in 5th. But the right solution would be a usable 6th gear ratio of ~0.74:1 (leaving other ratios including the rear as is) that would not sacrifice acceleration, yet will get you into that elusive 180+ mph space for bragging rights! /phpBB/images/smiles/icon_smile.gif