So I installed my GP-2 Rear diffuser today. It looks great. But here is the problem. On all the install videos everyone has the full plastic covering the bottom of the car. I don't have that on my car. Is there something wrong. I thought that came with the JCW package or is it a option? or does the full bottom diffuser only come with the GP-2? I hope someone can set this straight. Thanks

 

Some had it others didn't. In your case you didn't have it, so you'll have to buy the panels.