The fastest drag strip work I've seen in a stock/near stock CSVT was by an old member here, svt2000, in a 99 CSVT that had just a catback, and a K&N air filter, he ran a 14.7 at Norwalk ohio.
It's been awhile, so hopefully I'm remembering correctly, but he told me he launched at 5500 rpm, and let the clutch slip to avoid wheelhop, and shift as close to the rev limiter as you can without actually hitting it, something like 6500rpm.
keep in mind, driving like this is extremely hard on everything int he drivelline, so don't come crying to me if your stuff breaks. But, it worked for svt2000, he never had any major issues with his car for the time he owned it.