Steering wheel/Horn question

[Juiced06GTO]

Quick question on replacing the steering wheel and horn in my truck, its an 87. When i was moving it with out the motor the splines on the steering wheel stripped out while i was trying to move it and ripped out the horn contact spring and the plastic piece that sticks up from the cancel cam.

My question is how do I replace this? There is what looks to be a black plastic dust cover that I can't seem to remove. I searched and looked at the pictures here on the forum and couldn't seem to find anything. Can anyone help?

Thanks,
Anthony