I'm pretty sure the leading edge of the rear cover for the real ones is like on other similar setups. IOW, it's a like a lip on the metal and then a hard plastic piece hooks all around it. Take a look at a Tracker or Amigo.

I don't think the snaps on that leading edge would keep rain water out at highway speed.

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
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