I have a 93 p/u that had a 22re form the factory. When I purchased the truck it came with a 22r in it. I would like to add the fuel injection to the truck. I still have the ecu and the wirring. What all pieces besides an entake manifold will I need? Can I use the head that is on the motor now? I would really appreciate some help with this. I want to get it as soon as possible