Chevelle292wagon:
Thanks for the advice about Pierce Manifolds.
Yes, their K353, Chevy 3xDCOE manifold kit is exactly what I'm looking for.
I sent them an email, and it turns out everything you see on the K353 picture in their webshop is included: Linkage, carbs(3x45s), jets, springs etc. Everything:-)
It is a pricey kit, but then again, gebuine Weber DCOE carbs are not "budget price" alone...
And I probably would have to pay just about the same price here for the carburetors(new). The manifold is impossible to source in Europe, as far as I know.