It seems like your grandkids know what they want to be at a young age. Just like the others, I am excited to see photos, maybe you can try using an image hosting site, or simply use the attached file if there's one on this forum.
Now that's cool. They did a job well done with this project considering the fact that they are just in high school. Finding auto parts is easy for new cars, I usually visit 4WheelOnline. I wonder where their supplies came from.
It's not easy to modify classic cars, finding parts is getting tough nowadays. I guess it really depends on the person's passion to restore and upgrade a car like Model T.
The best will be the fact that we all have different preferences when it comes to cars. There is something about Model T that makes it special over Type A.
It's been some time since I've seen a picture of that car. It looks a bit well maintained, is it just me who noticed that most classic cars used BF Goodrich tires? Good luck with that project of yours.