The shape on those trim rings look close to the original but based on the research I did a few years ago, I believe the valve stem cutout should be a slot on the originals, not a hole like he shows.
I ended up purchasing the PY RPW38 trim rings. They were said to be accurate and also appeared to be very close to the originals I had pictures of from a POCI perfect gold award 400 point '68. The shape, valve stem slot, brushed chrome look looked real good. The clip, which is hidden, is said to be different from the original.)
