You think cutting into the box frame is "overkill" huh? I dont care how great it looks on the outside. At the very least use a bore scope to inspect inside the boxed in section. You might just be surprised! If you are confident your truck spent its life in Arizona or Texas I'm sure it wont look like this. I wonder how many M715 trucks with hours and hours of work and lots of money spent on them look like this inside.