I have one used rear end (differential) with 4.10 ratio, 10 1/4" ring gear. I bought it to replace the bad one in my '96 F350. Same ratio and gear size, but too wide for my truck. Measures 49" center to center on spring hangers. Pick up in or near Ellijay, Ga. Building a rock crawler or have a motorhome needing a rear end? This could be a great option. This came out of a 1994 Motor Home with 108,000 miles on it. Make me an offer!