Running RE audio XXX 6.5's in my car. Took a bit of trimming to get them to fit, and my windows don't go all the way down anymore (stay up about an inch). Ive always had my eyes on these when i had a system in my explorer, and got a decent deal on them. I still have to tune them in a bit, but im pretty impressed. Powering them off a cheap pioneer 2 channel, looking at getting a better amp in the spring, hopefully an older sundown.