I haven't been on here for a while - health issues, anyhow I saw there there is a wanted post for 1966 Le Sabre letters for hood and trunk. There is a 66 on CL in Lincoln, Nebraska, USA for $600.
It looked like the rear lettering at least was in fair condition - the car is very dusty in the photos. I do not know how to or am not able to email or reply to post so I put it here.