When I did mine 25 years ago I just bought some $100 dollar software called Incorporate. I think Legal Zoom bought them out. You just picked the state, filled out the forms, printed them out and visitied my local state gov office, paid the fees and done.
One tip, was my company was called...
Ok my kinda thread! I come from a family of car guys. "Lift it or lower it but just don't leave it stock" is our motto. lol
Here's my modded Xterra (don't laugh it does ok) and my 66 427 Fairlane (it does very well)