The only issue I have seen with the 02-04 stock hood scoops were with people that "modified" them, or tired to make them functional. Other than that, I have never seen another issue.
Now, what really concerns me is that it seems all you want to do is drive over 100mph. The previous thread about driving all the time at 150mph.....all this on $10 USED 275/55r17 tire that are probably in a speed category below H.
If you really want to "bond" it better, you need to sand the hood to the bare aluminum, and sand the bottom of the scoop to the bare plastic, no paint, bondo, or primer. Then use something like JB Weld, the 2-part stuff that is safe for plastics. There is also some stuff that is more expensive, called Metalset A4 Epoxy. The key is to make sure the aluminum and plastic is "roughed up" from the sand paper. If you want even more adhesion, drill some holes in the lip of the scoop, not all the way through, but just deep enough for additional areas for the epoxy to grip. Do the same in the hood. Once you put the epoxy on, then screw the scoop back down, wipe the excess from around the joining areas. Let it dry for a good 48 hrs, then paint it.