I vote for original. If it will be relegated to "wall hanger" status anyway, why bother faking the funk.
If I still had my original race MTB, I would surely retain the Syncros stem and seatpost that always worked loose as a constant reminder that "fancy parts" are not always good components, and that was the issue that haunted me every ride. The bars were from a box store bike because I had run out of money at the end of the build and slapped some cheapos (they were aluminum at least.........) to get by and then never bothered to upgrade as the fit was perfect. That was my bike, and swapping stuff out now would alter the history (insignificant, but hey).