I used alpine spr 17 separates for the front. I took the new tweeters completely apart so that it was just the driver. They ended up being about 1 inch diameter and 1/2" deep.
I took the factory tweeters apart. I snapped just the grill of the factory tweeter back into the pod. Then I placed the new tweeter driver against the factory grill and stuffed foam behind it, between it and the pod to hold it into place.
My install is stealthy, only thing you can see is the new sub I installed.
09 BLACK Sahara 4 Door - Auto, G2 4.88s
TF 2.5" Coil Lift w/shocks, TF Frnt Adj Trac, TF FLCA, JKS Discos, JKS Rear Adj Trac, LOD Full Rear GEN2,
A.C.E. Rock Rails, Viper TB: Check the Garage for more.