1" or 1 1/4" down draught carburettor?

[Major Fallout]

I'm looking for a one inch or one and a quarter inch downdraught carburettor for a bit of a project.

Can anyone think what I might find one off?

I know the old land rovers were on down draughts, but I can't remember the size.

[driverrob]

One inch carb?
Micro-project?

This is a PH-style project:

[Major Fallout]

It's an old 1920's engine that only does 2'000 rpm, well it only does 1'500rpm at the moment.

What the hell lets go PH, anyone know of a 1 1/2 " downdraught?