DO NOT RUN THE PRO-JECTION!!! The ford SEFI is an easier swap, more reliable, cheaper, and runs much better. Many people have pulled the Pro-Jection off and put on the factory EFI parts, no one has ever pulled the factory parts off for pro-jection. I even know a couple of people who have pulled the pro jection to swap back to a carbouerator,as it was found to be a better running, more reliable setup in the rocks...