Mike, try Jon Hardgrove at the Carburetor Shop in Missouri. 573-392-7378. He also has a website at
www.thecarburetorshop.com. Ames Performance also sells his rebuild kits, which include most of the screws if you get a level 2 kit (I don't recall if the throttle plate screws are included). I can't give you an answer on the jetting, but Jon can probably get you close. Bear in mind that he will probably tell you that using a carb from a different engine will require all kinds of internal recalibration (bleed sizes, etc.), but I think you can get close enough with jet and metering rod changes. Jon occasionally posts on this board as "Carbking."
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Larry
'63 421SD LeMans...
in pieces in my garage
and basement