In principle, the suspension of Alfa Romeos has not changed in the rear since decades. Now, here is a radical cut. Not only the rear independent suspension is sought, but also a more even weight distribution. Consequently, the gearbox and clutch are moved to the rear under the (lifted) boot, keeping the additional load for the synchronizer rings low. And to reduce the non-spring mounted masses even further, the rear disc braking likewise moves inwards.
Also the front axle changed. Indeed, the arms are kept, but torsion bar springs are substituted for the coil springs. The reasoning behind this is to make the engine compartment suitably for the eight-cylinder engine of the Montreal. However, due to the oil-prize crisis in 1973/74, the eight-cylinder was never mounted into the Alfetta.
The Alfetta clearly improved in terms of design as compared to its predecessors. Unfortunately, this does not hold true for the shape. Especially Alfa lovers are not particularly fond of the indeed modern shape, yet without any charm. Especially the rear is subject to criticism. The boot lid is raised a bit, because of the higher bottom, otherwise, the angular, non-aerodynamic bodywork is not altered significantly, and the rear is rather disimproved. The same is true for the rust protection, but, actually, for the slightly later models.