The 77/78 K7/K8 are mostly identical. They have identical shocks and rear swing arm (except for the Japanese specs K7 with rear disc and F2 arm). Because the K8 was only sold in North America, it isn't always listed. But, actually, my Koni shocks on the K7 also fit earlier models so that compatibility is even greater and you most likely can use the shocks from earlier models, i.e., the Hagons are probably identical for them all. But, again, 77 K7 or 78 K8 use identical shocks from factory.