Hey everyone, prospective SHO buyer here. Does anyone know of a list of the year-by-year changes for the 2013-2019 cars? Things like improvements to parts like the PTU, available options, infotainment, etc? I did some searching, but came up short. I know that I want to pick up one with the Performance Package as having the additional coolers and drain plug in the PTU is important to me. It's my understanding that all 2013+ PP cars are equipped with this drain plug. I'm also surprised at how few of these cars seem to be equipped with the package. I run all the ones I'm looking at through ETIS, and it's like only about 5-10% have it. I know that the adaptive cruise control is not available with the PP. Are there any other options that are excluded? I appreciate the help!