At 280-300 whp under boost it seems pistons like to produce holes. I'd imagine it could do that much easier under n2o since it cools down the intake charge, which I believe is the primary reason for the ugliness created by a high-boost SC. My intake temps at only 4psi were above 200 degrees on a hot day.
Don't rods usually die from rpms? I think the pistons are the weak link. The problem is, nobody has yet created boost on stock internals that was properly intercooled. Proper intercooling would do wonders to the perceived power potential of this engine. I'd expect 300whp easy if you can keep intake temps down.
I agree that intercooling should help however I also feel that the CR is too high for a boosted motor running more than a few psi. Someone needs to produce a thick head gasket that will allow us to drop the compression ratio to a safer level so we can actually see what the stock components are capable of without the knock melting holes in them.
Yes rods usually get killed from RPMs but a weak enough rod will bend from excessive torque too.