I have a box of windwing original parts. Originals have a right and a left on the piece that is against the stanchion, which side do you need? All the repros I have seen fit either side.
I checked my box of 28-29 windwing parts for the piece that goes against the windshield post. I have 13 broken ones, and 5 good ones all for the same side. It is no big deal as if mine is for the incorrect side you just file the wedge down or even use it as is. They are the piece most in demand as evidenced by the fact in my stash are 13 broken ones so originals do break easily. Usually passengers hit the glass and the bracket breaks. $15 including postage, original piece with good plating.