The K2 ears are the same as K3 and K4, except they are only a single layer of sheet metal and do not have the TS mounting holes.
K1 ears have the same or similar single layer metal ear, but they are shorter with a flange at the bottom.
I don't have a K2 to reference, but here is a pic of K1 and k3 and a 79.
If you look close, you can see that the longer K3 extends BELOW the lower triple tree, and the K1 stops above.
K3 trim ring/boot holder sits BELOW the TT, and the K1 trim ring sits ABOVE.
I would recommend simply holding out for the correct parts. MANY have waited years to find correct parts. There really is NO good substitute for a guy like you.
Or...doctor up a set of K3-79 to work, until you find the correct parts. That way everything is correct, EXCEPT the elusive HL ears. Then it's easy to pop them on when you DO find them...and, you WILL find them if you're patient.