First question is size... single din or double? If standard single then you will need an install kit that includes the cover for the lower din, usually comes with a "cubby hole" to fill unused area.
Second is a wiring harness... decks come with universal but you need to splice your wires to each speaker and the ignition + ground. If you can source a $20 harness from the deck's manufacturer for the SC then all you need to do is snap the plug into the back of the deck and your done.
third consideration is what do you plan to do overall? Do you want amps and subs? If so then you need a deck with preouts, 1 per amp.
Brand, best names are Alpine, Eclipse, Pioneer and Pioneer premier series, and Sony makes decent decks, but thats it lol. I just listed these as personal preference and personal experiences.
If you plan to get it installed NEVER have it done at best buy or like stores. Private shops usually know whats up. Hope this helps