My recollection on the BS bearings is that they are one-piece. I say that, as I recall being surprised that they weren't two-piece. I don't have direct experience rebuilding the 2.6.

One key question for you is why is this the third round? What has gone wrong in the past? Usual consensus has been that if the cooling system is well maintained, and if the timing/BS chains are periodically retensioned, the engine is pretty solid.

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!