[mjf6866]

i can offer a little insight to this even though i got a challenger....my friend has an 07 STI stock and i have a challenger R/T 6-speed all stock as well. while i never got to go to the track with him, i can say we have had them on a very dead stretch of road where he lives. from the dig, his car just kills mine as all of his wheels hook up and blast off, but as i hit 2nd and 3rd i am able to reel him in, actually easier than i thought and end up passing him in 4th. now i dont know if its an exact 1/4 mile possibly a bit shorter, but its close. we all know the weight disadvantage the challenger has, especially over a car like the STI, but i was still able to beat him 3 out of the 4 times we ran it....so with that said, the SS is faster than my R/T, so I would give the nod to the SS.

edit: i dont know how much faster the 2010 STI is over the 07, so keep that in mind too. also, i know those cars respond very well to mods, giving them them the ability to flat out fly.