Can anyone tell me the differences in the Boss Diff, the S550 GT Diff and the 350GT Diff?

 

The s550 differential is more like a doggy monkey baby, and the boss 302 is more **** Chung.

 

Any diff before 2015 is a solid axle. The IRS units come in three versions.
Automatic cars get the all aluminum Differential housing. The Manual cars get the cast iron housing and if you are going PP or Shelby you get the Torsen locking unit in the Cast iron. Did I pass the test.