I just spent $3,000 on a new upper rear hatch that was rusting, and fixing rust around the windshield. I replaced the skid-plate/cover under the fuel tank last year at around 145k because it was mostly gone from rust. https://forum.ih8mud.com/threads/dr...-the-skidplate-questions.788164/#post-9014395
You can see in the pictures not a lot of rust underneath for an '03 with that mileage in Michigan. Yours seems a little extra rusty, maybe a lot of highway miles on it? Or gravel roads? My wife runs our LC through the carwash a lot, maybe that has helped.
Is there a thread on your windshield and hatch repairs? I'm getting bubbling and need to address.