Kirkmanx2

I am looking for a 2 barrel intake manifold and carburetor for my 82 Brat. I rebuilt the original one barrel with a fualty kit, bad acelator pump. I would like to switch to the 2 barrel. Are there any 2 barrel adaptors for a one barrel manifold or a different one barrel carb I could subsitute. I have been looking on ebay and locally with no success. Please help.