Should work but to be honest I find that the gearing is already to short. 3000+ rpm on the highway kills gas mileage as a 4.06 and youll go up another 800-1000.
A LSD would also be nice but without supporting power mods I dont see the point in it yet.
The 4.06 would make it slightly quicker at the cost of a decent amount of highway mpg.
2012 Audi Q7 TDI S Line ABTuning 391whp588wtq
01 Turbo Focus 300+ whp
2012 Focus 19" Niches, AEM CAI, F2 Race Header, 3" Borla Dual Exit, H&Rs, Eibach Sways 183whp157wtq