Take a look at Alpine. They make some some nice units that are made for ipods/iphones. Alpine Electronics of America, Inc.
Can add the Imprint (PXA-H100) processor for better eq/crossover/time alignment control
Speakers being a personal preference, there are some good options out there. Dyn, Seas, Focal, Morel, JL Audio, Hertz, Alpine, Pioneer, JBL...
Keep in mind that install is pretty important, but seing as you don't want to spend a lot I would stick with stock locations and make corrections with a processor. Put a little bit of money into deadening the area where the midbasses will be.