Stock 993 Turbos are very quick. Its not speculation but fact that several Mags got times of 3.7 seconds to 60mph. Just a couple I found without diving into the library, Car and driver 7/95 issue (96 turbo 3.7 with 12.3 1/4 mile time). Autoweek in 95 also hit 3.7 0-60. Car and driver in 1997 timed a U.S spec Turbo S(424HP) at 3.7 12.2 1/4 mile. I believe R&T did a test that timed a Turbo S and a 959. The Turbo S (U.S spec) got a 3.6 0-60. The 993 Turbos are a .1 0r .2 of a second quicker to 60 than the stock 996 Turbo. My guess is the gears are the factor.