With 450 nut plates per Bearhawk, 801g difference so about 1.8 pounds (nothing to sneeze at!)
While I don't care for the tiny #6 screws, The #8 screw add weight.
NOTE: Floobydust... first time I heard the term was from Bob Pease, who I worked with at National Semiconductor in the early 1980's. Bob recently passed away and is greatly missed, but every plane needs a little floobydust in its build log.