Toyota 10.5" ring gear...

Why Would The Gear Mfg's Want To. The Market Is Owned By The 9 Inch & Dana Diffs. The Rest Of It Is Spread Out Thru The 8 3/4, 12 & 10 Bolt Gm Stuff. Mopar Has A 9 1/4 Rear, But It Hasn't Replaced The 9 In. Ford Yet.