How about we apply some 3rd degree burns to their bodies... not enough to kill, just enough to let them suffer with through the next 60 or 70 years in prison.
If the boy dies, then they should get enough to live a few months in agony.
They are facing the eternal agonies of Hell, I think they should be dispatched there as quickly as the law will allow, but I don't think Cali has the death penalty.
That was one thing I did appreciate about President Bush when he was Governor of Texas, he did not mess around with a juries decision, he allowed the law to take it's course without interference.