On Thu, 01 Nov 2007 02:55:26 -0000, Skip Gundlach
wrote:

Also, it's the opinion of the mechanic that the main pulley could
likely be machined out to a 1/2" profile (sufficient material), but
they didn't do that sort of work there, feeling it was too highly
precision for them. If I had the luxury of doing it in a layover, I
could make that happen, probably, by removing it and taking it to a
machine shop.

Before you do all that, try to find a double sheave pulley for both
the engine and alternator. Long term I think that's the real answer.