Just pulled the engine apart to see if the wrx thrust bearing will fit on any of the seven journals, NOPE!
Without machining the block or crankshaft for the necessary clearance I don't believe anything will fit.
This time I will assemble it with King AM bearings. I contacted them earlier today and they are supossed to get back to me.
If nothing else maybe they will make up a set of seven main bearings instead of us having to buy two sets of five for a 2.2 (1999 Impreza).
The King AM series are all aluminum/silicone and according to LAN at ECUTune, they are much preferred to the tri-metal bearings from Sealed Power and similar bearings.\
Tom