1972 k5 -Rough Country Steering Arm?
 

Hi There - New to the site, and a new k5 owner.
I bought a 4inch rough country lift kit, and have a couple questions.

- How do I tell if I have a 3-bolt open knuckle steering? From manufacturer, "Optional steering arm only fits models with 3-bolt open knuckle steering."
- Has anyone used this kit, and did you need to lower the TC? If so, what'd you use?

Thanks,