That is from a 2003 Cobra. Found it on Craigslist locally. Has 22K miles on it, limited slip, aluminum housing with 31 spline axles. Owner swapped in 4.10 gears then went to a solid rear axle. Width is just at 61" rotor face to rotor face. F-body is just a hair under that. For seven bills, I just couldn't say no....
