I'm running the T2. Gave me noticeably less understeer with all stock setup. I'm currently running all stock except Monroe SS shocks, Airlifts, ZQ8s and Spindle Extenders. With 8 PSI in the bags and 35 PSI all around, I have a bit of static understeer with a bit more understeer during turn-in. Giving it 1/4-1/2 throttle brings it into a sweet neutral drift, while more brings it around. I assume the T2R would induce even more oversteer tendency.