We do a fair amount of highway driving with our GC and I am considering replacing the weatherstripping for the door seals in an attempt to reduce the wind blowing through and perhaps reduce the noise as well.

Looking at Advance Auto's site, there is nothing specific to make/model, but there are several sizes in bulk available, such as 3/4" x 5/16", or 3/4" x 7/16", or 1" x 9/16", well you get the idea.