Square Bore Vs. Spread Bore

["A. Foster" <monkeypuzzle1@xxxxxxx>]

 Hello All;
   This seams like a stupid question but is there a way, in theory, to
convert a square bore carberetor into a spread bore? I am just thinking on
my feet here but could the air flow through the primaries of a square bore
be restricted to achieve a similar effect to a spread bore? Would it make a
difference?
Thanks
Best Regards
Arran Foster
1954 Imperial Newport
Needing A Left Side Taillight bezel and other trim parts.