As part of an ongoing stereo upgrade project, I finished the speaker upgrade. I have a 2016 XLT with 6 factory speakers ( 4 door, 2 tweeters). I installed 6.5 inch 2 way speakers in the rear doors and 6.5 inch component speakers up front. I think most 6.5 inch speakers will fit the TC and there seems to be plenty of depth for the speaker magnets.
I used the factory wiring. It is too much hassle to rewire the entire van even though the sound quality may be better with larger gauge wires. The