Which stroker kit for 470" b-engine

Great Thread , I am Looking At A Low Deck stroked 383 was thinking of the 496 ??, I have Indy Heads And Rockers and External Oil Pump , Have not Got Round to it yet As I need A Plan , Would Love 700hp But How To Achieve Reliable Horse Power Is The Question ???
the cost is vertually the same for 383 or 400 block to build. the 400 has the biggest stock bore of them all. the 383 will run into valve to cylinder wall clearance issues eventually