I have this exact kit. I bought em almost 2 years ago. They function great. My old hood was fiberglass and it was much heavier then the stock hood and they worked great. My current hood is much lighter then stock and I still don't have any problems with function.
My only complaint is that the lower mounting bracket. Since only uses one bolt to secure it, it moves over time and no matter how much I tighten it, I'll have to straiten it out down the road.
Please evert your eyes from my filthy motor and direct your attention to the product in question.