I finally installed mine last night.
Fitment is spot on but at first I had issues when I tried to clamp it onto the OE sport spoiler. When clamping it across the back with traditional style clamps it made the tips on the ends want to lift up and away from the spoiler causing ugly gaps and misalignment. So, I came up with this method to use tow straps and a couple of pool noodles to press it against the spoiler without doing any damage to my paint or spoiler add on. I'll let it sit like this for a few days and post update pics once I take the straps and noodles off.
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Nissan 370Z Forum - Loges's Album: Powertrix Wing Add On Install