These are two pairs of Koni Dual-Adjustable Rear Shocks as used in the 914-6 GT, all four shocks left for restoration at TrueChoice Koni in Ohio. Progress photos to come.

By the way, I'm not sure about the origin of these springs https://pbase.com/9146gt/image/120359455, I'll have to leave that research for another day. Here are the 914-6 GT factory springs I'm familiar with https://pbase.com/9146gt/image/27933371