Hellwig has the same issues as many others in the aftermarket industry. The instructions can be vague and/or unclear. I spent way too much time under my truck wondering why they wanted me to move my brake hose bracket. My brake bracket was nowhere near where the instructions said. Hellwig had not updated the instructions from previous model years.
Also, my exhaust pipe had to be cut, repositioned, and re-welded. It's still not right. I called Hellwig and asked at what position does the anti-sway bar work best. They said "LEVEL". I can't get mine level because the exhaust pipe is too close to the bar hangers.
Other than that it's a wonderful thing.