I hate to see people buy rods and pistons when there's a few guys out there from LMS own stable running 420-450 right now with no issues.
I should have blown my motor, I beat on it as hard as I could, even bought a second motor in prep for it blowing. I wanted it to blow! I didn't blow.
I know most haven't followed my footsteps but ATP's truck is at 500HP and been there for months, there's another truck making just under 500HP as well with no meth, no problems so far. Turbo Pete's truck 500ish HP with nitrous, no problems.
Of the people who have gone high HP I haven't seen them break yet, at least not that I know of.