i could see science getting to a point where you could grow a human body, but I don't think we could surmount the challenge of transplanting a head and successfully integrating the brain from your "old body" onto your "new body".
More specifically, I think even if you could perfectly reattach every nerve from the brain to the spinal cord, your brain might still not know how to control the new body.
(There's my armchair scientist contribution for the month)
Phantom limb syndrome is thought to be caused by the brain adapting to changed signals from the limb's nerves. It means years of pain, itching, false sensation. I can't even begin to imagine what it would take to address phantom body syndrome.
A medication (topomax) once gave me the reverse. My left arm felt like a complete stranger. Was terrified of it. Intellectually I understood it was just the medication screwing with me. Emotionally I wanted to take a chainsaw to that arm.
More specifically, I think even if you could perfectly reattach every nerve from the brain to the spinal cord, your brain might still not know how to control the new body.
(There's my armchair scientist contribution for the month)