01-02 WS6 had favorable gear ratios available (3.73 rear option) and decent factory ram air CAI and exhaust. 01-02 was also the best year for the ls1, with the move favorable cam specs and head flow numbers. They were also, however, the heaviest of all the 4th gen 4bodies fully optioned. IMO they're the best looking of all the 4th gens, and the anniversary TA is especially nice in blue and white.
