You might be interested to know that I finally got the empeg in my S60R and it sounds good. Still need to tweak the EQ and also stop listening to music that has lots of fiddly little electronica bits tucked in the background so that I'm not constantly thinking I'm hearing audio system feedback/crossover/interference at low volumes.
Anyway, all went well except for the actual HU installation, where the installer guy basically screwed everything up. The adapter plate was the wrong color, it was just kind of placed in the dash opening, not secured in any way, etc. I got my money back for that (the amp installation went fine) and am currently in the process of redoing it myself. I have to find an ISO harness (any pointers here would be appreciated) since the installer guy decided to use those little vampire tap jobs, claiming that the ISO connector was nonstandard. The interesting thing is that I was searching for a better dash adapter and came to discover that Volvo actually sells one themselves -- a double DIN one, even, for $30 (cheap!). So I ordered that and it should all be installed by the end of the week, I hope.
And, for what it's worth, my local dealer has five on lot. Not sure how many are manual, though. At least one, I think.
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Bitt Faulk