A:AnswerI put these in the doors of my son's 2004 impala, they fit fine but I had to splice the wires because the wire harness was different than the easy connect harness that you can buy (2006) might be different. I also had to use self tapping screws to mount them because the holes didn't line up
A:AnswerThe easiest way to find out is Google your make and model car and what size speakers come standard. If it call for anything from 6" to 63/4", than these should work. Good Luck
A:AnswerThey will have integral crossovers or bass blockers built in. All coaxials have some form of filter to protect the highs. Without a hpf on the tweets they would sound awful and be distorted... up until they blew.
