Christ makes all things new. If anyone is in Christ, he is a new creation. And when God gives us a new heart, it is far more real than the old broken one. In regeneration, God is turning us into people. God takes away the heart of stone, and in evangelical conversion He gives a heart of flesh. So what does God give? He gives a living, beating human heart. He gives a genuine heart. All our surgeons can do is give fake boobs.
Douglas Wilson