For sale is a pair of 40mm Solex-Mikuni side draft carburettors, made in Japan, with what look like 32mm Venturis. I can't see a size stamped on them but they look very similar to another set of Italian Solexs I have for sale and they do say 32mm.
Weber Dellorto Solex Mikuni carb jet drill + vice set 0.40, 0.60, 0.90 + 1.40mm
Weber Dellorto Solex Mikuni carb jet drill + vice set 0.40-3.2mm 5 of each size
Twin Solex carburettor 6 cyl manifold by GAH accessories possibly Opel Commodore
Twin Solex C40 DDH Carburettors
Twin Solex C40 Carburettors
Weber Solex Dellorto Mikuni Keihin carb Jet sizing tool – 1.50 – 3.00mm