Not a stupid question at all. There's a lot to consider when you start getting into modifying the front suspension, even if it's just simple stuff that you're planning on doing.
On that note, the Hellwig 55917 is the “pro-touring” Hellwig bar, and like the Hotchkis sway bar it has different LCA mounting tab locations than stock to allow for wider front tires. So, even if you had stock LCA's with sway bar tabs, that bar wouldn't fit them.
