are they square or round?

Classic has both, claiming that for 67-69 round is original. However, my 69 has a few very old square ones on it, with a little insulation fuzz on them.

I'd like to get original, even if they are twice as much ($8 more with my discount).

Thanks for the input.

my 69 had square plastic fasteners .

Most mid-late 60's Pontiacs that I have seen were the square ones...

i've only seen square on those cars