Several years ago I switched from 3.55's to 3.73's in my Polara and I hate it.Too many rpm's at anything above 60 and it just fries the tires at will.I wish I had kept the 3.55's.I have a 3.23 pumpkin that I may swap out.I don't drive mine often or on the highway but I can't even look at the loud pedal without going sideways.Granted mine is torque heavy and if were lacking low end I would probably be more tolerant of lower gears.