I am not sure. I had an installation done in mine last month using BAVSOUND, including a sub and DICE installation for iphone intergration. Cost at $1200. With BAVSOUND -- it is just plug and play no mods needed. A pair of mids will cost around what you are trying to spend and about the easiest to install.

Also, you may check out Alpine, but I would do all four because when they did the install -- all four of my mids were all ripped up. They are poorly made.

Good luck!