Orrrrrr just DIY! a 99 stang isnt to bad to do.....
http://www.the12volt.com/installbay/...etail/896.html
And yes, a lot of installers will put a system in that will "be there for years"..but i have a feeling that most car guys will one day look under the dash and be rather upset about the way the wiring job looks/was done.
DEI products have always been my favorite.
Just sayin..but i am a month late with this post too. lol