If "what I did to my Suburban" includes dropping it off with a local hot rod builder/fabricator to replace my rear wood floor. This fab work is outside of my skill/time level so was better left to expert Brent Jackson
http://www.brentjacksonscustoms.com/index.html who just happens to live a few miles from my house. Old wood floor had run its course so rather than replace with wood decided to replace with 12 awg sheet metal.