You are awesome parents. I too got my MJ when I was 14, I’m 15 now, I had to use my own money to buy and build mine and I don’t regret it. I hope your son loves his too!
I am looking into putting a 91-95 4.0 in my 89. What all would need to be changed in order for that to work? What would need to be done to get the H.O. motor to work in an 89? Thanks