GC Coilovers with Koni Yellows

So whats up with the ground control coilovers that are for stock and other brands of struts, and then theres the gc coilovers that are only made for konis? The coilovers for the konis are much more expensive, and the other set is cheaper. I have koni yellows, and i want to get the cheaper ones. But does this mean I cant get them?