Originally Posted by reenmachine

Well, if you aren't racing, I'd ask the following:

Why do you want to change?

Is there something that's not working the way you want it to?

Is something broken so you're considering upgrading instead of just replacing?

I wouldn't go with the one-way if you're just running the car for fun. You'll lose front brakes.

Ball diffs are a performance upgrade that allows you to put the power to the ground better. If I were building a car to run around on the street with, I'd probably just stick with the stock diffs.