I sent a nice used Torsen style differential ( 31 spline) to Frankland and had it set up with a new 4:11 gear set, new Champ aluminum housing, new axle tubes (55 inches wide housing flange to flange) and 9 inch Ford big bearing ends. This has never been installed, never welded on, no axles or spur gears. Price lowered to $1500.00 firm. Eddie 478-967-3362 SOLD