This is my opinion and how I’m going about my build.
this is a dead chassis and if custom parts are to be made they need to either use universal parts or parts of a chassis that will be supported for decades. For example if you’re going to reproduce suspension parts use universal poly bushings and or universal balljoints. Use a ford 8.8 center section for cheap parts and gear sets. Eventually all torque tubes will be gone, posi clutches will wear out, ring gears used up, CV joints gone. Updating the suspension to S13 / S14 components would probably be a good idea.