Finally the Dellortos fitted - $345 all up.
Machine up of the manifold to fit, Hoses, Linkage kit, Accelerator cable, Manifold gasket and a rough balance and tune.
He said to drive it for a while because the carbs have been sitting for so long. After some decent drives everything should begin to settle in/free up. He also said the fuel wasn't burning the best and that the plugs may be shot from the other carby. Drove it home from work and to me it seems fine.