I put two 4" 2-way Pyramid Gold Series in my dash, I did not have to cut anything out, but I did have to drill a few new holes for the screws. It was easy, I did it in one afternoon along with an amp and 2 tweeters, I screwed the tweeters into the A/C duct under the opening in my center dash. You can run the (2) 4" speakers and tweeters off of the front two channels of your cd player (If you don't have one, get one!) They are easy to install. I used the lead to my cigarette lighter for my constant hot, then spliced the rest into the factory radio harness. Run the two rear channels to whatever you wanna put in the cab corners, I built my own panels and put 4x6's in there. Do this and you will have an excellent sounding system.