I'm just wondering if anyone knows what a 3rd member (locking diff) or an axle that already has the locking diff in would cost. I'm done with the mods for know until I can save up some more money and I'm looking to see how much I'm going to have to save up for.

Yes, I could go for an lock right or arb but I kind of want to stay with toyota parts in case I sell it in the future plus I just like that fact.