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					Originally Posted by Pete_89T2  FWIW, I ended up picking up that 110A alternator from AceAlternators on ebay. I have no means of measuring current draw to verify the 110A upgrade, but here's the voltages I'm seeing with it: | 
	
 I picked up a Mastech MS2108A as a cheapie option for now.
You can get them for under $50 shipped - check eBay and Amazon.
Until I can scrape up the skrillah to get a Fluke for several hundred $, the Mastech is "close enough" - who cares if it's off by 20%?  
 
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		| @ 750 RPM idle, low beams on + fog lights on + A/C fan on max = 12.6V. Nudge the idle up to 850 RPMs or higher, and it goes up to ~13.6V. 
 With same loads switched off, from low idle and up nets between 13.6~14.5V.
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 It sounds like you got a better unit than I did.
I've never seen mines go over 13.9VDC, and it's an FD unit rated to 150A...  :P
-Ted