I don't trust GPS data on anything that accelerates this quickly and I don't trust logged VSS from driven wheels or the tranny, but that's the only option for most AWD cars. That said...here's the data.
Vehicle: 1996 Subaru Impreza
Motor: Innovative Tuning built 2.5L STI
Transmission: Stock 6 Speed
Upgrades: many (drag car).
Weight: ~2750 with driver
50-100 MPH: 2.40-2.55 seconds (times recorded during back to back 9.5X second 1/4 mile drag passes at Midwest Subaru Shootout)
Logged at 25 HZ via ViPec from stock VSS sensor in transmission.
VSS calibration set on dyno with drag tires on.