I have a 2012 Chrysler 300 srt8. The cam was wiped out. I know what you're thinking whats new! I purchased a 2018 6.4l charger engine, and installed it. There are no trouble codes, and the engine turns over, however it won't start. The only noticeable difference i seen was the crank sensors. I'm thinking they're both hall sensors with 5v a ground, and a signal. I need help bad!