I have a Discuss 4125 4 channel, RMS power @ 4 Ohms: 125W x 4. Got an explorer that the fronts are already modded for 6.5" up front in the doors. I have some RF punch components but I need something to handle the power better so thinking of changing it up. Been powering two sets of components 1 up front 1 in the rear but want to just run the rears off the head unit and use the 4 channel for front stage. Thought about glassin the A pillars and fitting another set of 5.25" components up there but I'm trying to keep the price down a bit, also thought about getting a little 4" and putting that somewhere. Could also try to make some kicks. I'm really not sure what to do, just looking for some ideas. Dont want to go into glassin the doors. Here is a pic of what they look like. Don't have much room.