I have a 99 Explorer, AVIC-D3 wont fit, can someone post a webpage to purchase a Double Din kit to make this unit fit? Thanks

You mean a cage?

http://parts.pioneerelectronics.com/par ... DT%2DVA133

Or the actual kit for your car? Any car stereo shop should be able to get that for you

part number is 99-5805 you will have to trim the dash opening a bit though.