I'm not sure whether 30 or more years from now it is going to be much fun replacing all the expensive sensors and computers and keeping all the complicated electronic systems working....
How about the guys putting the modern engines in their older mopars. What are they going to do? I think if this stuff is popular the aftermarket will support it, just like the aftermarket supports our old cars. Who would have thought you could get brand new steel tri five chevy bodies, or camaro bodies , mustang bodies, and now E body barracuda bodies. The market drives this. Money talks.
As long as people want to rebuild and modify them, there will be a market to support it. Sensors, computers and all. The way i see it history will repeat itself. It already has numerous times in our hobby.