I believe the bottom line is ,if there was no market or money in this,why would cn spend the time effort and money on programing,machinery, and engineering to do a billet hemi block?obviously,its there,if you can build a better mousetrap,it will catch mice........also,they are sold on a order basis so there isn't 100 of these sitting around,pay a deposit,a block is built.good common sense from a business perspective.cn isn't doing these blocks for health reasons,there is a market or it would never be offered in their catalog......................