The engine number is what is used for the paperwork on the title. The problem is until I find the number on the engine I am not sure I want to use it. If it isn’t correct then it will be very hard to change it. This is the time to get it right if I can so in the future there won’t be any doubt or problems. I think Brad replaced the heads on the engine but am not 100% sure. They are aluminum heads and I don’t think Pierce used those but again I am not sure. Thank you again for your help.