I've still got the original stereo out of my old D8, I replaced it with a 4050 so that I could add a CD changer. I sold that car about 12 years ago so the stereo's been sat in a box, forgotten about, for at least that long

I very much doubt that the code is there, but I'm sure you can obtain it via 'tinternet.
Yours for the price of postage, or it's going in the bin!