Looking for some to set up a 3rd member. Recommendations?

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Because some people think it is rhe strongest of rhe three.
However I perfer the 742 because it has the biggest inner pinion bearing of the three and does not use a crush sleave.
Having said that, any of the three will work just fine.
If you put a crush sleave eliminator in the 489 it is a lot better. I have had the crush sleave split with 4.88s and a 340 turning it.