VEs do times in the mid 7's depending on transmission, driver and conditions, apparently testing has seen some do times as low as 6.5 but i think thatd be hard to achieve.
I've been playing with Dashcommand lately which is time stamping a little better than every 0.3 of a second. Data recorded a 0-100 at 6.255 seconds (was lucky as stamped right on 100km/h) the other day. Probably not spot on but pretty close. Run was done in manual mode starting in second gear. Will try a run starting in 1st when I get round to it but I think would be slower due to the change...better still should drive up to Sydney and do it responsibly at the dragway rather than a country road I guess.