Used Ring and Pinion Gears, ships from San Diego:
Dana 30 4:10 Low Pinion out of a 2005 Wrangler TJ $100 Shipped.
Ford 8.8 4:10 out of a 1999 Explorer $100 Shipped.
Front and Rear Dana 44, 4:10 gears from a 2007 JK Rubicon. $100 front & $100 Rear...Shipped.
Groovy!