Marc I tuned a car weighing 4650 with driver 2.75 and 10 percent lower and only a high 1.3 60 car went 8.7s. He dropped to a 2.65 and we made some other tweaks and went 8.57 and another high 1.3. This was the beginning of August so DA was no good.
Needless to say you are a 1000 pounds lighter. Once the car is dialed in and in the Texas air I will be surprised if you arent well into the 7s with just the blower.