Welcome, that build will definitely mess with you. Check on the bench in the truck section, it will help you greatly. Im just about done with the same kit, stretched out freightliner cabover. Read the posts, there are some good tips that were posted to help me.
Lots of good truck guys to help. Id be glad to help in any way i can, extra or replacement parts, never can tell what you might need, misplace, the dog might eat, whatever
Again welcome and happy modeling