Those look like big block rockers by looking at the pushrod adjuster location which seem to be a little off center. Small block adjusters are centered in the rocker.
The small block Crane iron rocker kits did come with springs and not spacers. The shafts were not grooved in the Crane small block kit. I have a couple of pictures of Crane small block rockers. I am posting one or two on my phone but may have more at home. Ignore the shafts in The background as they are not Crane shafts.
Crane in third picture is one on the left.
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