I'm not sure if you guys find the solution... try this site:
http://www.metraonline.com/fit.aspx
or try this Ebay store, I ordered mine from them and they ship it pretty fast.
http://stores.shop.ebay.com/DK-SUPER-STORE__W0QQ_armrsZ1
I just installed my after market radio with Metra Wiring harness (Parts # 70-8112) and Turbokit (Parts # 95-8157B) This kit was for Double din, because I'm going to install a 2 meter radio underneath. You need to use the site to find what fit your installation need.
I just have one problem, I'm getting the sound but I don't think I'm using the factory amplifier, because the sound was not as loud as the factory radio. I'm still doing some research and will post whatever solution I find.