Ok, so I used a car performance calculator to come up with some numbers. I know its not 100 percent accurate, but it seems pretty close to what I would have expected. The biggest factor to the times is the shift time - not sure how fast the auto shifts, and each driver will shift in a different amount of time using the manual. But - heres what I came up with. I only had time to do the V6, since its the only real dyno chart we have. I know the numbers are a bit off, since its 304 horsepower, not 300, but I used the same chart for both.
Using this dyno chart:
I came up with this speed vs. time graph for the manual. The program refuses to calculate anything before 20 mph, since there are too many factors that affect a launch. I extrapolated to get 0-60 times.

Using this chart, the 0-60 for the manual would be approximately 5.65 seconds. from 20-30 takes .70 second, then extrapolate that down to 0 at that same rate and get 5.65 seconds.

And then, using this chart, I get 5.75 seconds for the auto. It takes .75 seconds to go from 20 to 30, so extrapolating down to 0 adds 1.5 to the 4.25 from 20-60, for a total of 5.75 seconds.
Now, all of these numbers assume that the driver of the manual can shift at the exact same rate as the automatic tranny shifts. A slower shifter in the manual would take longer, and a faster shifter would be able to get even faster. This is also assuming a perfect launch with both transmissions, and no launch or traction control enabled. Its a lot of hypothetic math, but it does bring hope that the real world numbers will turn out a bit in the favor of the manual.
- Xanthos