I'd listen to some Focal, A/D/S, Diamond.
I ended up with some Diamond Hex S600S (silk dome) , truly overkill for my WRX...
car audio is tough...you think that dealer setups for home audio don't reflect your listening environment, car is night and day.
Be careful with brightness as well, in my WRX the tweets are higher and angled up and towards you. Even with the 3 dB cut adjustment on the crossover they tend to be hot up top. I have a rudimentary PEQ in my Kenwood DDX7015 I use to cut another 3 dB.
If you are mounting nearer the woofer on the same axis it should be more comperable.
Oh yeah, give it some juice too. You have a noisy enviroment and head units don't do anything justice! IMO it's a far more dire situation that in home theater where even a crappy receiver will actually put out over 35 WPC...