8-24 screws and nuts with captive washers for the spoilers and 1/4-20 with captive washers for the brackets. They’re kinda tough to get without buying the car. People pull them and toss them before they sell the spoilers.
The kit is mine, and not sure if I need or not.... I’m looking through my stuff now to see if I have the exact hardware. It would be sweet if we could get individual part numbers and see if they can be sourced.