Can You Buy Any Car Stereo and Fit it into Your Car?
You cannot purchase any car stereo on the market that you wish and hope that it fits into your car's dashboard. The reason for this is that not all car stereos are made in the same size or shape. You will need to measure the space your old car stereo was in to make sure the one you purchase will fit in that area. This will make your life a lot easier. You will not have to return the car stereo you purchased because it does not fit, nor will you have to make multiple trips to the electronics store.
For more info, see Car Stereo Installation: A How To Guide