JMO, but stock rods at that HP level isn't a good idea. To get around 500-550 with a 460, it will be at 5100-5500 rpms or so. Shift point will be a bit higher. You would have to turn it even higher to get the HP ya want. Sure, some have done it. Some were lucky, and some had some tricks in rod preparation (Kasse's old dyno engine) and still a bit of luck. If ya gotta buy pistons and rods, ya might as well go with a stroke kit.
I would think stroker or lower the HP level.
I would think stroker or lower the HP level.