hyundai sonata

I have A 2009 Hyundai Sonata GLS. I am trying to Replace The Stock Radio With the (Pioneer FH-S501BT). I've Been trying to Figure Out For Months What are All The Other Parts I Need to Replace It. PLEASE HELP ME!!!

So, long story short the grill of the deck sub in my Sonata is missing. Anyone have a clue where I can grab an OEM replacement? Think if I call up Hyundai I can get them to dig in their warehouse?

Hello, this is the second time I've had this issue occur. The first time, I installed just my aftermarket head unit. The check engine light came on, my car sputtered here and there, and the next day my car refused to accelerate. I put the stock deck back in, brought it into Hyundai and they said...