1. No one has found any suitable aftermarket fog lights to my knowledge. Best to scour the junk yards for a decent pair : car-part.com
2. You can get Lloyds mats from the CICCI web site.
Chrysler Logo Floor Mats
3. The fuel door does lock when you lock the car. ( I think it does on a base, not 100% sure)
4. Kenwood marine head unit matches best and has good performance. You have no subs in a base model, but you could find them also at the above URL along with mounting hardware. You do not have the Infinity amp to drive them, but an inexpensive aftermarket amp would do the trick.
http://www.crutchfield.com/p_113M312...MR-M312BT.html