Some things will depend on the mechanic that does your check. I think you will need some kind of fender or shield over the back wheels if you don't have that. It used to be that you didn't need a functioning speedometer which is kind of interesting. As Leo said, they are revamping the standards but hopefully the changes will be more for the more modern vehicles. One thing that is complicated is building a truck with a modified engine etc., especially with a substantially modernized upgrade.