Check out the Bose 321 system. Woofer + two speakers makes for easy installation. Also has DVD/Blue Ray, 2 Aux inputs, AM/FM. Great surround sound! Expensive, but worth it!
The only modification I made was a separate "automotive type" antenna connection. It was a pain in the b*tt cranking up, and powering up the roof top just to listen to the radio.
Steve & Jan, Ava & Emma (Mini Schnauzers):
2016 F350 Lariat 4X4 Powerstroke CC/SB "PULLTOY V"
2013 Alpine 3535RE "MAGIC CARPET IV"
Proud Navy Vet!