Those Aisin axles are very strong for their size. Just keep in mind that everything on them is metric, including the wheel studs and the brake line fittings (uses a different flare).
The same axles were used under just about every Japanese import truck, so Toyota, Nissan, and Isuzu have them, too. Some caution has to be used with Mitsubishi axles, though, as some use a small 6 lug patters, same as the Dodge Dakota.
I would strongly advise against using adapters, far too prone to failure.
