Hey guys. Kinda new to the whole forum thing. I'm glad it's here though. . .it's helped me complete a lot of mods from home (saved me a bundle). I've wanted to update the audio system on my '10 SG and have recently purchased the Ipod Interface and Saddlebag Extention kit from HD (installed). While the front fairing, tank, and seat are off I also decided to purchase the ARC MPAK 6. How difficult of an install is it, any more difficult than the Interface install? Can you hear a marked difference b/t the Arc speakers in the kit and factory HD speakers? As always, thanks for the info.