We have changed / updated a few things since 1986 in home construction.

1.   We only use light weight metal trusses.
2.   We use a steel top plate instead of wood
3..   We use the j bolt anchoring system for the interior walls now instead of panel leg.
4.   We manufacture the panels to fit the project so there are no more field cuts.
5.   We are now fire PROOF by federal standards, instead of a three hour fire rating.
6.    The insulation value has been determined to be R19

This movie will give you a general idea of the building materials and procedures.
To the Movie.