Peter Egan's column in Road & Track a few months ago was about just this subject. He figured it will be horribly expensive to replace all the gizmos in a restoration project 10 years from now.
270,000; not bad at all! Of course your car is worth keeping and restoring. The jury is still out on the new ones. As for restoration, you're right. Up to 2000, with the right discs and or manuals and tools, they are still in great measure fixable by the patient do it yourselfer!