New to 370z with questions

wildmark

Good morning, first post!
I picked up a new 370Z on Friday and i have already decided I want to upgrade the speakers and add ipod capability, so here are my questions;

1. I upgraded my HK speakers in my M3 along with the head unit and the difference is massive, I want to keep the HU in the 370Z but upgrade the speakers, firstly what are the simple to install options, what I mean is are there any plug and play speakers, and secondly is there a video showing the install.

2. What are my options to get the original HU to be able to work with my ipod?

as you can tell I'm not that handy but if its simple and there are either video or pictured instructions I can do it.

Thanks for looking and any info.

Regards

Mark