After a rutted hillclimb that wasn't so kind to the car today I noticed that on articulation or hard left turns there's a single click. On turns it'll only click once, and only on fairly hard turns, more likely if there's a bump. Doesn't do it at parking lot speeds, even at full lock. 

 

My first guess is a broken front swaybar. Is that at all likely? Suspension is all stock.

Probably just a broken end link. They're nylon and get a little brittle when they get old.

 

FcpImport has good quality replacements for $10 each.