1) Yes, it worked great for me. Here is a link to the product description on Lucid's website, where I bought it:
Lucid Automotive: Pioneer & Sony Hard Wired Controls
2) This particular unit only controls Sony and Pioneer supporting hard-wired remote control interfaces. Other makes and models are available which can control other head units (hard-wired and IR variations exist).
3) Yes, I also purchased this through Lucid. Here is a link with more details:
Lucid Automotive: Lucid Automotive's Exclusive S2000 Door Speaker Adapter Kit
4) I did respond to your previous PM with this information, but here is that info again in case you didn't get the information:
I received the following shipping quotes from the USPS website:
To send via USPS Global EMS is $40.25 (3-5 days).
To send via USPS Airmail is $28.70 (4-10 days).
To send via USPS Economy is $19.25 (4-6 *weeks*).
If you were to buy these parts and pay via PayPal, I would refund any difference between the above and the actual shipping costs via Paypal.
Thanks - Mike.