I hit a damn cone with a weight on it the other day and needless to say blew my fog light in 2 and broke a piece of the inner fender. Does anyone know if I need the whole fender, a certain piece? Rockauto has 2 different ones but I'm not sure from the pics which I need if not both. It's a 05 SRT-6 if it makes a difference.

 

That is the front bumper cover and the forward left inner fender liner.
You can probably get by with that bumper cover ( $$$$$$$ ), but the inner liner is relatively cheap.
I bought both sides last year from eBay for around $25 each.
Here's one at $35 shipped : 04 08 Crossfire New Left Driver Side Front Inner Fender Liner CH1250126 | eBay

 

I'm guessing this is the same piece? Rockauto had the full inner fender and then this piece.

 

Sure looks like it, and for $10 you can't go too wrong ......

 

The one on Ebay is not OEM. Bought one, not completely satisfied --- it's OK but looks a little different than original.

 

Yes, the 2 I got from fleabay had the little doors riveted on, makes it harder to access the fogs, but on the other hand they aren't going to go missing like the OEM ones ......

 

I did the same and wasn't happy, so I ended up repairing the OEM and drilling a couple holes and using zip ties to hold the door.