Yeah, sort of. With the ratios I listed the car drives just fine. It may be slightly sluggish off the line with the current setup, but I'm focusing a little more on the final drive ratio (trying to make sure lower gears are decent as well), because I want to be able to drive this car across the country and get decent mileage. One of my buddies had an '03 Cobra, somewhere around 500rwhp, had 4.10s, but also had a T-56 and it got 20-22mpg. I'm hoping for a few more, but we'll see how it all turns out.
No matter what trans I go with (except maybe the T-56), final drive will put it around 1500-1700 at 70-75.