mine have pretty much no visibility at all thats why i did the led bars lol

 

There's a guy that stuck his extra pair of hid lights in his reverse lights...lets just say he has no problems seeing out the back of GP with I believe is to be 20% tint. I can't say I have had much problem seeing out the back of my car with 20%.

 

i think putting an hid kit back there would be kinda a pain to do but it probably looks sweet