Originally Posted by Briansshop
A Detroit Locker can be had a lot cheaper than a selectable locker. Think I paid about $550 for mine. Installing would only require a backlash and pattern check, not full gear set up.
I've never set up gears myself, but my understanding is that a backlash and pattern check essentially is a full gear set up. If you are re-using your existing gears there's a reasonable chance that you'll hit it right simply by using the same shims / settings that it had before, and the backlash and pattern check is to verify that you're still in the right place. But if those checks don't show you what you want, then you're back into the full gear set up process.