You'll also need the idler shaft (which sits where the cam would go) also to rotate the unused cam bearings so you keep some sort of oil pressure, the carbies/exhaust side of things, water pump (diff to 2t although looks very similar) and thermostat houseing (hard to get if you don't have it)
Im not sure if you have prob with the pistons hitting the valves, but you'd be best to check!!