I don't know. On my last runner, I had a mildly built 22re, and 4.88's. I started w/32's, then eventually went to 37's. I had no problems keeping up with traffic, and liked having a "stronger" r/p....The only thing I really missed was when I went to 37's, I was back to almost stock tcase gears.(doubler, but no 4.7's)

What HP is your engine rated at? I am sure it is more than 65 HP.

I would not recommend anyone use the 5.71, you just don't need them if you have any power at all. Use a lower Tcase gear set or double low range. I agree that would be stronger.

I carry a spare so I am not worried about them breaking. If it becomes a problem and happens a lot I will go back, but I am going to at least give them a try.

I have broken about 5 sets of 5.29's , 2 sets of 4.88's and 2 sets of 4.10's. The only gears I haven't been able to break was 3.90's , I exploded the clutch first.

All we can do is    and see what happens.