Mike

1st off welcome to the board.

To answer all your questions some more input is needed as to which kit you have. What size lights you prefer or have. But as a general blanket statement yes there are brackets available/needed to mount the front fascia and lights thru UP and Mustang Depot to name a few. It depends on how good you or your builder are whether you need to buy the brackets or not. Reason being on face value the brackets are very basic/simple its just that the reinventing the wheel factor has all been done for you. These brackets designs are just from previous builders who have made duplicates of their method sold to these vendors, there is no one licenced "Eleanor" bracket or methoed per say.
The Piaa lights also mount to the same main bracket but they themselves don't come with hardware. There is two additional brackets needed for the upper lights and hood pins.