451 stroker
Then no, I don't see it making 500hp as described.
As John mentions - those pistons are a bear to get set up properly to get any benefit from. Personally (and I've used them) I would not plan to use them unless you have a very high degree of skill with blueprinting... Otherwise they are a waste of money and effort because you have to equalize the chamber depths and then mill the dome to give the rigth piston to head (quench) distance. Quench becomes less affective very quickly as the piston to head distance exceeds .040". So between the chamber cc'ing and grinding you'll be spending a bit of time on getting it right. If you can't do that personally, you're paying shop time for mock up and disassembly to machine, then another mock up to verify it's correct.
If it was me, I'd budget for some ICON forged dished pistons, use factory LY rods with ARP bolts, and invest in a set of Stealth heads for it. Yes, you're spending more, but after those are gone through you will have spent a little more than doing 452s with porting, and they can support more power and have room to grow, are lighter, and can be built in an engine that is powerful and friendlier to pump fuel.
A B wedge 451 is a great engine - but it's easy to spend more when trying to spend less.
