Shadow:
Check out this link: http://www.tjwakeman.net/TR/WeberDCOEinfo.htm it covers installation on a TR3/4 engine but so far it's one of the most useful information sources I've found.
I'm bolting the same setup onto one of my MGBs, but it's one of those typical long drawn out projects.
Kelvin Dodd
Global Sourcing Engineer
Moss Motors, Ltd.
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