I poked around a little bit, and found out Alpine has a touch-screen compatible navigation system after all (NVE-N099P), which is the one piece missing from the setup I want. The only problem is that it’s only available in Europe and comes with road maps of Europe. I can’t find any dimension specs for it, but from the picture, it looks like it has a much lower profile than the old units, which would be really nice.

While this does me no good, maybe it’s a sign that they will be bringing it to the US market soon.