We've had a 1990 Volvo 240 sedan with M47 in the family since 2012. My kids learned how to drive stick on this car and it is now my daughter's daily driver. Now with over 300k on it, the M47 transmission is done. Very loud howling noise when in 5th car. She is avoiding 5th gear now.

I'm not sure what path to take on this. It seems that M47 transmissions are nearly impossible to find and when found may be just as worn. They were rare to begin with and now with age and lots of consumption by manual swaps, the parts supply is long depleted.

I know there is a path of replacing the M47 with a T5. I don't have time to do this myself and I doubt that my local shop would be keen on it. Plus, it's not clear the the required adapters are readily available.

I suppose that swapping to an AW71 would be an option, but labor might still be prohibitive.

Finding a good used M47 would seem like the best path. Does anyone know where to find one or have any better ideas on how to keep this car rolling. My daughter is pretty attached to the car and would rather keep it than drive something newer. I previously offered to trade her for an S80 V8 and she said no way!!!