Replace receiver/CD unit with digital media receiver?

Hi! I was wondering what sort of wiring harness and setup the lower unit on my shiny, beloved 07 non-Tech that's new to me uses. Would it be possible at all to replace, perhaps, the receiver/CD unit with a digital media receiver? I saw some videos for installing the aftermarket Iphone adapter and stuff. I'm considering going for an install of the HON3 myself. I'm a first time Acura owner; is this significantly harder, fundamentally, than swapping out the head unit in my prior vehicle (Jeep Wrangler). The lower unit looks, at least, like it's a pretty standard double-height radio.