Old Car Stereo to New Shelf Unit? ?

Hi, I would usually just look this up online, and I know that I need a 12V power supply and such, but I want to case my old car stereo. I had an old Firebird and a nice head unit and pioneer speakers, now I have a new car and no use for the old unit. Any one know how I might be able to do that? I am good with woodwork as I am a carpenter as well. Thanks.