If you’re installing in a LC and replacing the amp, I think you’re fine following the advice in this thread. What amp are you planning on using?
There was someone on here that installed a Soundstream picasso nano 5 channel and seemed happy with it. I may give that a try since they are reasonably priced and Im not looking for incredible sound just better than the blown out factory speakers and non functioning sub. A while back I purchased all new door speakers and a Skar sub for the rear but never installed them as I ended up wanting to do the Teye's