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 Nedding A Left Side Taillight bezel and other trim parts.