So it's been a few weeks. Any of you that have installed the front sway experiencing any front end knock or other noises? I'm debating whether I'll need to get adjustable end links dial out any preload as that could potentially cause groans and creaks over bumps.
At first I thought I was getting knocking from my new front sway bar, but then it became an intermittent noise, and now I don't hear it at all. So I can't be sure it was the sway bar. I installed Koni Yellows at the same time, and I noticed that one of the springs has worked its way off the rubber grommet on the spring perch. Maybe the noises were coming from when this was adjusting itself.
One way to avoid noises is to (using two people) pull the sway bar towards the rear of the car while tightening the bushings. This gets it in the position with the most clearance. I'm using the SE Fiesta sway bar which I heard had plenty of clearance, but in retrospect I wish I had used the little extra effort to make sure it had as much clearance as possible.
As an update, I'm LOVING the SE Fiesta front sway bar matched with Koni Yellows and no rear-end sway resistance changes. This car hooks up! You can induce rotation effortlessly and then keep a constant slip angle throughout the whole corner. Don't be worried that a slightly stiffer front sway bar will remove the rotation these cars are known to achieve.
In fact, I attended a Starting Line school recently, where the instructors are all previous SCCA Nationals champs and/or race car drivers. One of the instructors who drove my car said it was the best prepped HS Fiesta ST he's ever driven and offered to co-drive with me at nationals. So I 100% recommend the combo. I'm not the fastest guy around, so the pre-baked setup I put together from lots of forum searching is SE front sway bar, front Koni Yellow shocks at 1/2 turn from full-soft, rear Koni Yellow shocks at 1/2 turn from full stiff.