Lets start with the locker update
My truck did not come with the factory e locker, and I have been shopping around for different options on what would work best for my budget and driving. My original plan was to go with a yukon grizzly for the rear, but I called 3 local shops that were able to work on installing lockers in 3rd members, and even if I bought the locker, and removed the third member, they were quoting 2k-3k just for labor on install.
I picked up a front and rear axle swap from a guy on facebook marketplace that for 1k, that had the ecu and a harness. Harness ended up being completely wrong, so I had to build my own. I liked this plan because I got the benefit of both the locker and a gear ratio change from 4.10 to 4.30 in all one swoop.
It had some surface rust so I wire brushed down both units and painted them.
Then replaced front axle seals, and ECGS needle bearing. I bought both tools they offer to help the job, and it was very easy since I did it while the new front diff was still removed from the truck. I used Timmy's video and the diagram he showed to build my own harness, with brand new connectors from toyota, the part numbers for which are listed on the same wiring diagram.
I was able to swap the front diff, popped out the trakmotive axle with just a big heave, and finessed the diff out without having to use any tricks to improve clearance to fit it out. It sucked putting back in this way. It took a couple tries to configure the wires right because the pin layouts are not super intuitive on the direction facing if you have no original harness to work with.
Finally, got my actuator noises after chipping away at this job for a long time. Replaced the gear oil with 75-90 conventional. Bought new bolts for all drain and fill plugs from toyota. I decided not to worry about routing the breather to the front diff since the factory location is already high enough for what I need.
Said and done, this took about 1300$ and a lot of work to do myself, but I'm happy I was able to save a couple thousand $ and complete the process.