I have a brand brand-new Ford Racing Traction-Lok differential. It is for a 8.8" back side with 31 spline axles. It has carbon fiber clutch plates, and will accept anti lock exciter ring. These were original equipment in the 03-04 Cobras, and will fit independent or strong rear suspension. This is a fantastic diff for those Mustangs looking for a more powerful rear end over the stock one. I likewise have a set of Alloy USA Axles. They are heavy task axles and have a 10 year factory. I will offer the diff by itself for $250 OBO, or I will certainly make a package on both.