Apparently it will not fit a 1998 Grand Prix, but you should check with your installer to see what your options are for your model of car. Another option is to check online for "what fits my car".
I was told there was a way to find out online if certain stereos will fit in your car or not and I can't find where to do this. Will this fit in my car and do I need to bye an installation kit?
There is an easy way to search online for "what fits my car". Anyway, according to the guide, this radio will fit a 2004 Ford Escape with some modification to the sub-dash area.
We have a 2005 Azteck. How can we find the correct radio for it? That will also fit the steering wheel controls? What about installation? Do you guys do that?
There are many options of stereos that fit your Aztek. Talk to the Best Buy mobile installers and they can steer you in the right direction. You can also check online for "what fits my car". A similar stereo that fits your Aztek is Pioneer FH-X720BT. It is around the same price and available from Best Buy. Usually the installer can keep the use of your steering wheel controls.
Any Double din radio will fit your Azteck. You will need a steering wheel interface as well as a interface to put the radio in. You will have to find a installer as Best Buy sells online only.
I would strongly encourage you to visit a Best Buy store to speak with a tech in the car installation by for specific details. A tech should be able to determine if this receiver is compatible with your receiver.
I would encourage you to visit a local Best Buy store to speak with a tech in the car installation bay for specifics. A tech should be able to determine whether or not this receiver is compatible with your vehicle.