You should have a place to install a radio on your dash/console. Get a dremel tool with a cutting bit($35) you will also use it all over the house. Trace the template for the deck and wire the + and – to the battery or at the fuse block. Install an antenna and cut your holes for the speakers.
Brand wise for the deck you can use just about anything. Just be sure to install a weather case/door with the deck. But make sure the speakers are poly or waterproof, not weather proof. Pretty simple to install.
Theres a million decks and speakers on e-bay.