Cowl *pop*

[Samson]

This may be a normal sound, but whenever my '01 goes over a large bump or into a driveway, the front end pops, or tinks. Not the suspension, but the body.
I remember when the car was new it did not do this. Is this just the car getting old (16k miles), or is something loose? Could it have anything to do with the front stress bar?

Thanks!