"Fooman" wrote

Can you take a certified aircraft, and do a full restoration, ie: remove
every part, and every rivet and rebuild the aircraft, doing new corrosion
proofing and replacing defective corroded parts as you go, and install
experimental instruments and engine. For this you would require proof of
build, ie: photos and logbooks, but this would be done with a kit built
aircraft.

You would have to at least make parts for each major system. The real trick
is finding a FSDO official that is willing to sign off on your project.
IIRC, I think what you are proposing _has_ been done. I don't recall the
details.
--
Jim in NC