I have a pair of these for my 03 xterra. Running 6.5 components, 4in components on one, a set of 6x9s and a aw1060 10 on the other.
The issue I'm having is space.
The 03 xterra has zero useable room for hiding amps. Luckily the 520ds are tiny...and I have found a place to put them...but...