A Contour (without major drivetrain upgrades) is probably never going to run fater than low 13's. Yes some of the turbo 3L cars may hit as low as 12.9 or 12.8 seconds. But I don't think that will be a consistent time, and will probably only be in race trim (probably using slicks, some weight removal, using race gas, etc).
The well built n/a bolt-on Zetec will be no better than mid 15s, a full built n/a will net low 15s to high 14s, and with turbo or s/c maybe mid to low 14s. Put n20 on a tirbo or s/c setup and you're looking at high 13s.
These are realistic times based on how the cars are performing now. If somebody dumps enough time/money, that will of course change.
