just picked up a 17" special . came from an 11' fltrx. on that bike i threw the stock harmon kardon in the garbage after the 2nd replacement failed. went with a sony din, arc moto amp and focals. was very happy with that setup. question- being new to this nav/stereo combo head unit has anyone swapped it out for a d i n head ? i see metro makes a kit to do so. or is the power and sound good from this unit ?