I recently inherited a nice 2000 Impala. Very pleased overall. But I noticed that there is a ledge / pocket at the front edge of the rear wheel arch that catches debris flung off the wheel. I figure this will rust out in no time here in Canada. Why did GM design it that way? I noticed that the design was changed in later models. If I cut a hole, I will leave an exposed metal edge which will rust for sure. Comments?
Bill