Hi everyone I have a 1968 f100 with a 302 song barrel carb that the rings are toast and the engine is tired. I also have a 302 out of I believe a 99 Ford Explorer with Gt40p heads fuel injected with coil packs I want to put it in my truck and converted to carburetor and a electronic ignition my question is what do I need and what can I use from my old engine to make it work I also have an e303 cam I want to set in as well thanks for your time I really appreciate it