This is a cool thing Jamie . Now my dream of driving my A12 bee, coast to coast, with the 4.10 dana instead of a 8.75 with 3.23s, could be a reality. The 4.10s would feel like a 2.87 with your .70 overdrive gear. And the 4.56s in my street/strip 67 GTX would be a livable 3.19 for the ride on the highway