I'm still hunting down parts and wanted to track some of my findings here.
I'm looking to upgrade to a steel housing.
I have a 1997 Geo Tracker (4 door) 1.6L MPFI 16V SOHC 5 speed man. with 5.125 gears.
From reading Eric Bewley's posts I found that I can get a steel differential from a Grand Vitara or XL7, but I'm having a hard time finding one with the same gear ratio.
I did find that these years have the correct gear ratio;
99-03 Tracker 1.6L MPFI 16V SOHC Auto or manual 5.125
99-03 Vitara 1.6L MPFI 16V SOHC Auto or manual 5.125
Should I draw the conclusion that ANY "Manual" Grand Vitara or Tracker 99-03 will be a direct bolt-in with the same gearing? Crossing my fingers