I looked at that link and I think it is incorrect about the K30 switching to a semi-floating. It will be easy for you to verify once you get to look at the rear axle again. Here is a link with additional information about what GM offered http://www.pirate4x4.com/tech/bible/index.html#GMRE
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1970 Blazer with a 400 sbc and 4" lift
1980 Pontiac Trans Am, 455 Oldsmobile
2012 Kawasaki Concours 14
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