The engine block is stamped somewhere with the year that is was made isn't it? I am doing some work to my 92 YJ and it seems that some of the wiring is jerry-rigged and some of the connectors don't match. I am wondering if the previous owner did an engine swap. Also does anyone know where to get an engine wiring harness and an underdash wiring harness. I have only been able to find used stuff. Any help would be appreciated