Tool steel pins and stock pistons is what i planned on using but since the build may see over 1500hp i was concerned about the abuse they can take at higher rpm, boost, cylinder pressure due to cam, and amount of heat/abuse they can take so im looking for better options. I have no concern in pulling the head and pan and popping them out to inspect after a while just dont want to be buying a 2-3k $ set of pistons and be replacing sleeves often if they make contact. This truck wont be daily driven nor be considered a reliable or realistic means of transportation. I havent spoke with anyone who has pushed stock pistons over 1500hp. Many at 1200hp and close.