"I want the old type of Laser aluminum tiller extension with the metal swivel that was screwed onto the wooden tiller. Don't need tiller; only extension."
Why do you want something old-style on your boat when new parts work better?
Sailed my '81 Laser for 12 years and it was fine. Its base plate will fit better on current Compac 16. And Don't need to spend $$$ on "new better" equipment!