Curious if these can be made to work on the early models ? I saw another sale ad that said they would . These were meant to deal with wind noise I imagine ? 
I’ve seen ads for the bottom front seals for the quarter window , but not the top . 
 

 

 

https://www.datsun-garage.com/collections/datsun-240z-260z-280z-s30-weatherstrip/products/reproduction-front-quarter-window-weatherstrip-1974-78-260z-280z

I don't know the answer to this, but the 240Z quarter glass frame does not have threaded holes to attach the rubber strip.

2 hours ago, bpilati said:

I don't know the answer to this, but the 240Z quarter glass frame does not have threaded holes to attach the rubber strip.

Yes - I just went and looked . Only two screws at the top of the frame . Wondered if folks were glueing them in - in order to facilitate a seal .