What's the average 1/4mile time on a stock 6spd ?

 

At what ambient temperature, altitude [baro pressure], and humidity. The point is the engine power output changes over 50 HP depending on conditions and altitude [Denver Summer].
With conventional or oxygenated fuels?

Easy to see 0.5-1.0 second variations or more.

Most examples are the best it ever has been. Members don't usually post the worst - even average numbers.
Something better than 15.0 and higher than 14.0 seconds usually. Average 14.4-14.7 depending.