How long would we live if we could replace body parts with exact matches?

How about replacing our whole bodies and exchanging brains with that of a clone?

Someday the micro surgery techiques will be available. Would you participate?

I would if it was sure fire. They are patenting human genes right now. Perhaps one has an inalienable right to patent ones own body and its specific type. Do we own our own uniqueness?

Your thoughts?