All engine rebuilders are going to have a limited warranty.
I've been involved with installing 3 of their engines. One was for a 3.4 to 3.4 swap in a 3rd Gen 4runner. Another was part of a 3.0 to 3.4 swap in a 2nd Gen 4runner. And the 3rd was swapping in a 22RE engine into my 85 4runner. All of these engines are doing great.
I might be hard to get the data you're looking for. I know the owners Nick and Rebecca well and Nick has run into some of his earliest customers who now have quite a few miles on one of their engines and they're still going strong.
I just don't think you're going to find someone on this forum that's already going to have 200k miles on their rebuild to give you some assurance Yota1 engines will last.
All I can say to you is I've seen their operation and I trust their workmanship. The fact they have around a 5 month lead time on engines should tell you something. When I need a rebuilt engine, I know I'm going to get one from Yota1.
Below is Part 1 of the video series of us swapping in a Yota1 engine into a 3rd Gen. Even if you use another company for your engine, our video series will walk you through on how to do the swap.
When you're pulling the engine, you have some choices on how to do it. We chose to remove the transmission and transfer case to have an easier time getting the engine back in. Some people keep the transmission and transfer case connected to the frame and choose to fight to get the engine aligned with the transmission. At the time, we felt it would be easier to align the transmission to the engine rather than the engine to the transmission. I've done it both ways now, and I'd have to say I think it's less work to keep the transmission bolted to the frame.
Another choice is how you deal with the engine wiring harness. Do you strip the harness from the engine while the engine is still in the vehicle, or do you do what we did and make all the harness disconnects from the transmission, transfer case and other things like the O2 sensors and front diff ADD actuator and pull the engine with the harness still attached to the engine.
<iframe width="560" height="315" src="https://www.youtube.com/embed/0EtZnqzJhI4?si=rC8m_pv3dQIkwzD6" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
