You have to use a combination of bearings and races from both, or go to bearing house, with mesurements that you need, and get some new bearings that will work. It will only work in the V6 carrier.
Gearman is right, it does weaken it a little bit, but no the housing, the right adjuster, whiched doesn't see much of the force. The left adjuster gets most of it. On the right adjuster you don't get as many threads to bite into, so the adjuster could evenutally weaken and pop out. If done right, I don't see this happening. If you were to get a skinnier bearing for the right side, you could put the ajuster in more.
I ran the supra LSD in my truck running 250hp and a racing clutch from a supra. I ended up ripping the gears apart, but the carrier and housing stayed intact.
I believe Gearman has seen them fail, but then agian, how was it set up?. Depending on gears that you have, it might make a difference. If you don't think you have enough threads on the adjuster, than don't do it.