2010 Lexus IS F Full ReviewTHE 2010 LEXUS IS F FEELS unburstable, rock solid, ferocious.In manual mode, its rifle-bolt precision and lightning-fast shifts make DSGs feel soft, and manuals a bit last century...The big news is the move to a compact Torsen Limited-Slip Differential (LSD) from the pre-update model's electronic limited-slip type.According to Lexus, the adoption of a mechanical LSD