Here's some general information:
https://www.designation-systems.net/dusrm/app1/rtv-a-2.html
Here's the available drawings by Harry Stine, scroll down to the third page:
https://www.nasm.si.edu/research/arch/WebPDF/prepsets.pdf
www.argrockets.com
has a 38" tall X 3" diameter kit.
Here's the link to the JimZ plans from the old Centuri kit:
https://www.spacemodeling.org/JimZ/ka-3.htm
And the available Semroc parts for that plan:
https://www.semroc.com/Store/scripts/ClassicParts.asp?ID=495
As you can see, I was looking for all the information myself a while back.
Everything here was brought up by doing searches.
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