I seen an adapter plate with only two screws holding it in.
With those adapter plates you really need to be cautious with the overall height. You need to make sure the speaker wont come into contact with the door panel on the inside.
As far as the tweeter placement, thats a bad spot. Get them in the sail panels of on the a pillar just above the dash hump aiming right at each other.
The comp set didnt have an external crossover? Ouch. How much did they run ya?
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-Ryan
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