ET
I'll Hang out on the LIMB and say between 9.50 to 9.60?
I'm guessing a 5.67 is the Gear you have Now?So,with a 4.10 you will go past 150mph.........
A 6.33 is the 1/8 Factor for a 9.90 1/4.
By the Picture of you Truck,i would have to say that YOUR FLYING!!!
Later
G 8)