ok, heres what i found out...
im still going to get that head unit, and then that switch box i was told to get...

Metra Axxess CHTO-013 (New Version of CHTO-01) NIB - eBay (item 300322619513 end time Sep-12-09 10:42:14 PDT)

and then my next question is...i will still need a harness to get the connections to match up to the radio, right? something like a volkswagen harness if i remember right.