Originally Posted by RonRizz

You will need the plates, and given the fact that tweeter position does have a lot to do with preference, as well as processing abilities, I would suggest trying yours in the dash first.
I do have mine in the doors, and quite low as well, but with full processing capability, was able to overcome those inherent issues to suit my personal tastes. I did, however, add a set to my a pillars, and crossed them at 12.5k to raise my stage to satisfy a few judges ears at shows. (personally I think its more a psychological thing) but they seem to enjoy seeing them up there.
For the casual listener, the dash is typically a great spot, even though it is farther from the woofer than recommended.