Hey guys. I have the shaker 500 audio system. Its okay but I came from my F-150 that had upgraded Alpine door speakers and 2 subs. My question is that if I swap out the door speakers and rear speakers for new ones would they still sound better even with the factory headunit? I wont change that cause I don't want to lose sync.

 

The upgraded speakers will sound good, but you won't get the full effect of upgraded speakers unless you change out the headunit.