On a non-SHO note.....
My Focus SVT has 101K miles, is absolutely stock, and has the original clutch. 5-door hatch with moonroof (probably the heaviest model).
Traction Control has on Off button, but it stays on under 20 mph. Last week, in fighting that, I had a best of 15.89 @ 88.88, and the best 60' all day was a 2.363.
I found out the fuse to pull to disable the Traction Control/ABS totally for this week. This week, the clutch started going away. On the launches, I couldn't tell whether I was spinning tires or the clutch was slipping (clutch smell after every run). Ryan Dudek drove it home, and said he got slippage in 6th going up a light hill. Clutch Time!!
Anyway, yesterday's best was a 15.55 @ 89.22. Best trap of the day was a 89.85, but the best 60' was STILL only a 2.308 (on the 15.55 run).
I really suspect that with a fresh clutch, it would be good for 15.3-15.4 at over 90. If you look back at tests of the car "in the day", that's damn good! Jarod Adams (ex SHO guy...with an SVT identical to mine) has a tune and a few other bolt-on mods, and has only run a 15.7 best. He said one of the car mags got a 15.4x once, but I dunno if that was a 3-door non-moonroof car or not.
I see no reason why it couldn't get down to at least a 2.1 60', IMO.