Help with Crossover Steering and Highsteer

[Low69CST]

I need some help figuring out what I need to covert my father's 72 K5 to crossover steering and high steer. I apologize for posting a topic that's been covered, but i'm having trouble connecting all the dots. I've been looking at ORD's kits. Those kits include new steering arms that bolt to the top of the knuckles. It states you must have "open" knuckles. I thought these were open, but upon looking at them there's no place to bolt on the steering arms. I've attached a picture below. Since these aren't the correct knuckles, does anyone have a list of years that will work? I think I've seen elsewhere that Jeep knuckles will work?

Additionally, does the high steer use beefy tie rods and a link? We are running a pretty large tire and are curious if it has more benefits than just moving the link above rocks.

Thanks for any help.