Hello I was told by some friends that you were the man to talk to about my project. I have an 88 wrangler with the 258 ba10 and np231 and want to convert to the ax15 np231 and do the 4.0HO head conversion. I am looking for the parts that will make this happen. So do you have a 4.0Ho head with wiring harness, intake, fuel rail injector etc, ax15 with matching np231? or a donor vehicle with all I need and how much?