Thanks, Jimmy57 - good, specific answers. Who makes this tranny, and where would I go for parts?

Hello Volvo people! I'm looking at re-entering the 240 world with the purchase of a '91 wagon. My concern is that the transmission is reported as being noisy in the upper gears, and I haven't been able to find much at all about repairing these transmissions. I've searched this site, and read several...