2012 Chrysler 300 Limited Speaker Question

I need to replace my front speakers in my 2012 Chrysler 300 Limited and I am being told that i should be buying a 72-7902 adapter. However, from everything i have read, I feel that i should be purchasing the 72-6514 adapter as the 7902 appears to be for tweeters and smaller speakers while 6514 is for larger speakers. Does anyone know the correct adapter before wasting what little free time I happen to have. (Also, I have the Alpine speakers/system)