Could somebody build it..........sure. Has history shown enough would buy it to make it a viable investment......No. Plus that ship has sailed. Chevy guys are WAY past 4.840 stuff now and 5.0 motors are "bracket" motors these days. Mopar is too far behind and even "hardcore" guys have just gone with the flow and have Chevy "based" power plants. Too little, too late, even if somebody WOULD do it. Plus, some feel the head would look so much like whats available for "other" motors, that "what's the point" and I tend to agree.