mild turbo to overcome altitude

are you looking for track specific performance or street performance as well. i dont know your track, but 4.30s work great for me on the street here at 7200 feet. the feel of the car is about the same as 3.55s at 1100 feet elevation. however, gearing may not be a good thing, depending on your tracks setup.
 
imagine the horror of going from 4.30s to 3.31s like i will be doing this winter. :jaw: i will be finally installing that GT500 rear axle i bought from your neck of the woods this summer, and they come with 3.31s. that will be the ultimate SOTP killer.