Hi Jack,
The front spoiler was on the car when I bought it long time ago. I don't remember the Brand name but you can call one of the vendors and find out. Also, coming back to the subject of tires, these Achellis are street legal track tires for dry weather. According to the manufacturer their wet grip is below average so it is not recommended to drive on these in heavy rain. It does not matter to me since I never drive my car in rain.
Shah
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