Breaking Point On A 440 Block

Well you already have an engine so to me it does not make much sense to me to look for a block and go through the trouble of fitting all the parts from it into anothr block. I would hold back on going crazy with this engine and keep looking for a race block to start building the all out motor you want, then either sell the stock block motor or keep it for a spare or use it in another car. I'm planning my next engine for my Duster and want to have at least 800 hp so I'm probly going to sell the 440 and 400 blocks I aquired and use the cash towards a race block. To me it makes little to no sense to build something you know will fail. JMO.