Here’s someone who’s been in the game for a while folks.
Congrats on your numbers and longevity! Vids are a must! 
IMHO (and just as a note to anyone interested) - Any boosted engine is that more boost/power is obviously going to put more strain on most moving parts and seals etc than if it were NA. So basically this means at high boost, the key is that there must be no “weak link” in any aspect of the engine! Hence why I recommend starting with a healthy engine and lower boost settings at first while issues can be addressed while they are minor.
I’m guessing that about 90% of KA-T (and SR) blowups are the result of ignored symptoms (and overboost-happiness), with leanness probably being right up there, and continued driving.
Man, 440rwhp has got to feel great on the street!