You definitely went the extra mile with this in the start.
I have a Humvee project up now, but when I saw how much I had to remove to get to the "guts" of it, I skipped/cheated my way around that part.
If you need some inspiration for weathering then my post might help ( ? ) - Or you might want to go in a completely different direction! - I like my vehicles dirty, scraped up and looking pretty abused. And there are also a lot more techniques on how to weather a vehicle then the short explanations I have in my article.
I'm looking forward to how this assault pick-up will turn out in the end. It definitely served as inspiration for me when I started working with my stuff!