For those who have no core we might get you a Pettit built OTS engine correct on your doorway. We have a new Mazda 13B REW engine and rebuild it to Pettit specs ahead of shipping it to you. That could be a petty good history should you ask me. https://13b-turbo-for-sale94442.timeblog.net/65631221/13b-engine-for-sale-japan-can-be-fun-for-anyone