father and son restoring a warlock

people tell me im crazy for putting a big block in the truck for a 16 year old to drive .lol but i really dont want to do it twice so im doing what we want the first time!
i have told him he will get the truck when he is 16 if he keeps good grade,dont get in any trouble,no smoking,drinking,and be respectful. so far he's doing a good job,
i did the same thing for my daughter and her 70 340 duster,gotta keep the kids interested in old cars or who is going to keep them on the road when we are gone??