I think its possible on a good track with a great driver. The picture is kind of crappy but this is a 9.967 second 1/8 mile run with a bad 2.386 0-60 ft time. I have an '04 2.3L with intake, exhaust, and a tune. The 0-60 could deffinitely be brought down so I don't see any reason I couldn't run a 9.7. I have no idea what that would result in the quarter mile. I don't think a 14.7 is at all possible with my car right now, but maybe the ST.
Also note that I didn't even hit 70 mph and that was my best run. My highest mph was ~71 mph and I believe when matt raced me he had a pretty bad run but still managed ~ 73 mph.