FWIW, PMO also sells a solid alloy fuel bar to replace the standard Weber banjo+hose setup; plus they have the correct adapters to "loop" the carbs as Steve describes, using either AN-6 braided or barbed (hose clamp) fittings.
Sorry for the rather poor picture but this gives you an idea how my 914-6 2.2 S-spec is plumbed.
