I am building a 408W stroker that will make 600hp. I will be running 4:11 gears in a 9" posi with a 3500rpm stall through a C4. I have intalled GrabaTrak suspension on the car with 4 1/2 leaf springs, Edelbrock IAS shocks all around, 620 lowering springs in the front (1" drop), 1" sway bar in...