Good to see you're incorporating your sons into the build. My dad did the same for me back when I was 4-5 when he started his Packard project. They'll thank and be grateful for this opportunity they're getting until the day they die. Working on a car with your dad is one of the coolest feelings one can experience.
Good luck with it, can't wait to see what becomes of it.
Imagine a zit, on top of a zit, on top of a zit, on top of a zit, with cottage cheese inside of it and some more zits. Then we're starting to get there.