All I will say is Supporting mods, Supporting mods, Supporting mods......
Dont' slap this here biggun turbo on the side of a completly stock engine setup.... I mean, stock injectors, stock cooler, stock fuel system, etc.
Stock bottom ends are fine. Mavric has run up to 22psi with his RB25 with an old school T3/T4 hybrid. He was making 280kw atw.