What exrench says. Please don't call a panhard rod (track bar) a "sway bar" - they are two different things.
A properly designed panhard rod will allow the suspension to it's full amount of up/down travel, so the coach can be raised or lowered as much as the suspension allows. Whether the available panhard rods for your chassis does that is a question for the company that supplies the panhard rod.
What year Pace do you have? Older ones are a gas chassis and could be Ford or Workhorse, while newer Pace's are diesel pushers. From your description, I'm guessing you have a gas chassis.
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL