It sounds like the bearings in the rear differential of my 06 Mustang GT are in need of replacing. I get a rattle from the rear. I pretty sure it's not the clutch pack because it only happens between 2k and 3k rpms and it's not consistent.

I'm looking for a good shop to replace the bearings and while they've got the diff cracked put in some 4.10s or maybe 4.30s. Inexpensive is preferable however, I'd rather pay a little bit more for someone with a good reputation for rear end work.

NoVA area is prefered, although I travel to the 757 frequently so that's not out of the equation either.

 

I'm no mustang guy, but Excessive Motorsports was fair to my friend who needed his rear done on his GT.

 

Another good shop for the is High Tech in Chantilly

 

Springfield Motorsports in Lorton, VA. or ME!

 

+1

They installed 3.73s in my Cobra a few years back. Cheap too, only around mid $100s or somethin like that.