I had my 4.30 gears installed and they whining like a $#*&%, they are FRPP/Motive gear and the installer has done my last 6 gear changes on all my cars with any whining at all. He thinks since they are motive gears box in FRPP that motive cut on the teeth might have a whine to them. The pattern looked good when they were installing them. Any buddy else havng this issue with 4.30 gears?