Metra makes the fascia kit and wiring harnesses. You can get those on Amazon if you can't get them from Crutchfield. This site might be helpful:
https://www.bergvillfx.com/products/continental-cd7416ub-or they sell a modern radio that matches the original aesthetic and while I have not dealt with them, i have heard from others that their customer service is good.
When I put an Atoto android based unit in my Boxster, there was an issue with the power wires not being right and I had to swap it on the harness wiring before it worked right. It's been going strong for over a year with no issues.