Im pretty sure your probably going to be around 2300-2400. I dont remember exactly what 70 is but with a T56 and 3.73's in my car I dont hit 3000 until 98.
With the instant tq of these cars, I don't see the need for gears unless the car is at the strip competing every week. With the 4.10's you will probably be in the 2600 range at the same speed.