I know this may border on blasphemy here or perhaps I'll get a very predictable answer, but I've been doing a lot of reading about the M19s and seeing how much the things are selling for these days...
A couple of the threads here lead me to believe that even the most minute change to the stock M19 can really impact the sound of them (e.g., iron core inductors in the XO vs. air core replacements). I was beginning to think last night that I could perhaps use some of the gear I have on hand here to put something together that might be close, but it seems daunting. The guy on ebay who sells the new cabinets - has anyone gotten any first hand knowledge of how those work out if you put the 416s and 802s in them? The original XO is really hard to come by apparently...