[Dave Goob Cook]

When it comes to ET reduction from the rear end, I think the best money and time is spent on de-burring and polishing the gear sets, getting the lash and depth perfect for low drag on the load side, and careful attention to the details of the lubricants, and control of it, bearing loads, and bearing fit.

For the lighter vehicles, especially stick shifted ones with lot of ratio and operating RPM, it changes the priorities some.