Ok so I was thinking about getting some KC HILites and sticking them behind my grill. I'm pretty sure I'm going to run the KC HIDs but not sure if I should go with 5", 6", or 8" lights. So my question is what is the biggest light you can fit back there. Also the 5" is a 50W w/ 500,000 candle power 6" is a 50W w/ 660,000 candle power 8" is a 50W w/ 814,000 candle power