I had a normal Prp brace on a 500kw setup with a 9180 on it. 2.8 stroker, little cams blah blah Thrashed the hell out of it - Cracked the block.
Now I got a N1 block with the fully intergrated Prp steel brace, same 2.8 crank - rods - slugs, massive cams 292s blah blah makes over 1000hp and don't thrash it just give it a hit here and there, things going strong as no dramas at all.
I reckon it comes down to how you drive it, and cly pressures to be honest, little cams and trying to jam it all in low down in the rev range breaks engines.
Let em breath, rev, build oil pressure, than dump it all in and it will make the power and last.
Also the less limiter dump side steps you do the better and I can tell ya now you don't do em with 1000hp but you do em all day with 500kw : D
Thats my experiences anyway