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. 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. It's on my trailer now and I am willing to deliver it a reasonable distance.
