I have an 07 GT Coyote Swap I am doing now. I am using a 6R80, 30 inch tall Hoosier drag radials, 3:08 gear and a Circle D 6F converter with a Pro-Charger. I am still in the putting it all together now and I am building it for bracket racing 1/8th mile. I am wondering if the Converter will be to loose and if I need to change to a 4C? Then again, maybe I need the loose converter to get the car rolling?