1. 212 KW ATW with
15.5 PSI from a 2.5 WRX engine with those supporting mods sounds....ummm...interesting.
2. Nobody has mentioned the other factor involved in engine failures.... how the car is driven.
3. On a public forum such as this there will be all manner of replies which will serve just to confuse you further.
4. I would be talking to MMS about rebuild options.
5. If you're not keen on MMS then I'm sure ASG could offer some options.