[alfa] head-porting at home

[White Anthony <anthony.white@xxxxxxxxxxxxxx>]

I'm just about to pull the somewhat tired 2 litre engine from one of my cars, and replace it with a recently refreshed (by someone else) 2 litre.  
 
Once the current engine is out, I was planning to take to it with a die grinder, and cut whacking great chunks out of the ports, closely following the instructions in Jim Kartalamakis' "How to Power-Tune Alfa Romeo Twin-Cam Engines".  
 
Lately, however, I've been having a few doubts.  These started by reading about people actually making ports flow less having undertaken a home-port job (admittedly, these were stories about Holden V8s, which have notoriously untidy port geometry).  They were developed reading John Tippler's account in "Giulia Coupes GT and GTA" about Alfa discovering the 1600 made about 4 horsepower more, plus a stack of extra torque, when someone accidentally put a 1300 head with smaller ports on it.  
 
Does anyone have actual, verified, preferably tested experience of the Kartalamakis instructions and measurements?  Or alternative instructions, measurements and diagrams they'd be willing to share?  
 
Regards,
Anthony White
Wellington, NZ
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