Will this work with my single-shock setup?

This arm is engineered for dual-shock front ends only. If your truck is running a single shock per side, you'll need a different control arm designed for that geometry — mixing them causes alignment and handling problems.

Do I need new hardware or ball joints when I install this?

The arm itself is the structural piece. You'll want to inspect your existing ball joints, tie rod ends, and mounting fasteners during install — replacing worn joints while you're in there is smart preventive maintenance, but not always required if everything else checks out.

What if I'm swapping from a single-shock to dual-shock setup — is this all I need?

This control arm is one piece of the conversion. You'll also need matching lower control arms for dual-shock geometry, new shocks, and likely a front end alignment after install. Suspension geometry changes require a full front-end refresh to do it right.