Nice work on the wheels and headlights. Use a beaker bar and that bolt should come loose.

 

I bent a 3 foot long breaker bar on that bolt and had to use an electic impact to finally get it off. Good luck. That bolt is by far the hardest part of the install.

 

The "demon bolt" seems to be a hit or miss thing. Some are stuck in there like Excalibur and some seem to come right out. I wouldn't recommend an electric impact on it because they just don't have enough torque for large tight bolts and nuts. But Fentress24 above had good luck. I have a very inexpensive pneumatic air impact and it has yet to fail me.

1/2" Professional Air Impact Wrench
1/2" Drive 25" Breaker Bar