Pretty sure no one makes a kit.

It's been a long time since I did mine, but I don't think I needed a kit to do it anyway.

If I recall correctly, removing the radio left me with pretty much a standard DIN size hole in the dash. CD player came with a thin mounting surround that slid in and had tabs to fold out and secure it. The head unit then slid right into the thin surround piece. I used a section of thin metal strap (Home Depot probably) to make a rear support. Then custom spliced all the wiring.

Only drawback is that you will need to cut a small section off of the piece that mounts under the dash on the right side to make room for the radio faceplate. I don't think there is any way around that with an aftermarket radio. So if your car is all original look for a spare to cut up at the swap meets.

Another option would be to have the factory radio upgraded with new internals, and then use a trunk mounted CD changer. But, you're into big money going that direction.