Yup. The engines are physically of similar size, the engine mounts are in about the same place as most smallblock Chevy engines (the '57 Chevy uses front mounts, while the vast majority of smallblock Chevy mills use side mounts), and in the real-world, GM even kept the same bellhousing bolt pattern, so older gearboxes will bolt up. Pay attention to the routing and positioning of radiator hoses, and that's about it.