Not really sure why I'm posting this but for what its worth, a friend of mine has a Fiesta ST (euro 3 door but I believe for performance intents and purposes identical to the NA car)
Had a race from a roll. 40mph to about a 100. Done 3 runs
I ran from third and changed up around 4.5k rpm, finishing in 4th. I ended up being slightly ahead, maybe a car and a half. Very close.
On one run I kept it in forth and the ST pulled away.
My car is a stock R6P (G92 equiv for firebird) car but for headers and an exhaust, about 115k miles on the clock.
Given the Fiesta ST's stats that's probably about right. And factoring the TPI's are stronger off the line than from a roll, I suspect a quarter mile thrash would have the firebird more ahead?
Still, can't believe we're about level with a hot-hatch. The shame!
Any similar experiences, would love to hear