[cam2Xrunner]

I'm doing the same exact thing in my truck, with midrange and tweets in the A pillar.

http://forum.elitecaraudio.com/showthread.php?threadid=115970

I'm thinking the DLS UR2.5 would be easy to install. It's got it's own sealed chamber so airspace is not a concern.

http://www.dls.se/english/speakers/UR2,5.htm

I've seen them for 150 a pair. Might be able to get them a little cheaper.

Not sure if the Morel's will work good in this situation.

 

[cam2Xrunner]

Here's another one to look at
http://altomobile.com/html/thunderdome.html