I have a ring and pinion set of 4.10 gears for sale. Prior owner installed these, I went back to 3.42's. I thought these were 3.73's for a long time and didn't find out they were 4.10's until an hour ago when I took the picture and counted the teeth on them (10 on pinion and 41 on ring) they were installed perfect, no whine AT ALL. I will include the reducer I had made that corrected the speedometer (I think it was still off, but not by much, maybe 3%?) These have been out of my GN for a little over a year, a very tiny bit of rust has started on the teeth, and I mean very little, But I thought I'd mention it. Looking for $85 and I'll cover shipping to the lower 48.