There's a limit to the stock block IMO of 500-550 hp before the bottom end starts cap walking. With a 4 bolt race block and forced induction 550-700 hp. Above that durability and longevity are the factors. To spend the bucks to go all forged on a stock bottom end is a waste of money. When it lets go (and it will) the expensive parts usually get trashed. THANK YOU FOR YOUR SERVICE TO OUR COUNTRY! I'LL BE GLAD TO SEE YOU HOME!!!