I HAVE a USED set of 3.07 gear set...TOO. THE PINION GEAR DOES HAVE SOME SURFACE PITTING FROM SITTING IN THE HOUSING FOR A LONG TIME. STILL SHOULD RUN GOOD 85.00 gets the set for under there tree. GMC gears part numbers are as follows- ring 1365221 pinion 1365222 28 spline pinion 14 - 43 tooth count PLEASE USE THE REAR COVER PICTURE TO KNOW WHAT REAR THESE GEARS FIT...IF YOUR DIFF COVER LOOKS LIKE THIS IT FITS...YOU ALSO NEED THE CORRECT SERIES CARRIER TOO. PM JIM JD
