Go see the nissan forums guys, its been said tooooo many time.
https://www.tamparacing.com/forums/n...infiniti-tech/

KAs bottom ends are good until 300hp, any more, its a ticking time bomb.
Actually all KAs w/o any internal mods are ticking time bombs.

^500hp with the block...sure its possible, but the pistons, rods, etc. arent stock.