Anything is possible.  I do see the windshield coming out in my future.  I can see (dash pad out) what looks like water dripping where the gasket sits on the pinch weld.  I'm hoping for the best, but fear the worse.
I did see their was a TSB regarding water leaks in the kick panel on non AC trucks.  Mine does not have the drip rail extenders installed.
I HATE water leaks, spent a long time getting my 91 K5 water tight.