I have an old Toyota radio-cassette that came out of my son's 1986 (D reg) MR2 (long gone).
I'd rather someone with a Mk1 MR2 has it than I chuck it. If a club member wants to offer me something for it, that money will go to charity. The member will need to either pick up (west Surrey) or pay for postage. It's a bit heavy (being 1980s vintage). I can supply photo if someone is interested.
Radio model 86120-32261, serial number 28565.
I wired it up to a battery and it came on and the tuning went up and down when requested, but I don't have access to an old car to connect aerial and speakers, so I cannot guarantee what it sounds like. My son swapped the radio for a modern one when he bought the car many years ago and I am sure it was the original radio.