Enfield Rifles Scooter Club

Does anyone know if a series 1 headset will fit on series 3 forks ? or will series 1 headset and forks fit in a series 3 frame ? I`ve started work on the lambretta and i want a series 1 looking front end but have a series 3 frame. Ta much

If I recall series 1 is a frame breather with the headlight fixed on the front casting? rather than the moveable headset, I have seen pics of a framebreather with a headset on it with a light so it ends up with 2 hedlights hope this helps