Hughes 360 Whiplash cam
Hughes isn't much more, for a custom grind. They do like lots of lift, stock 1.6 rockers get real friendly with retainers & valve guide tops with too much lift. .520-.530" lift is safe with Hughes 1110 springs/ matching retainers.( A drop in setup, no machining required) Any more lift will likely need the tops of the valve guides trimmed. Not a big deal, but it does need , the cylinder heads removed to do this. A custom push rod, is a real good idea here.