Please see the linked info below from SFI Foundation regarding the way driver restraints and window/roll cage nets are dated for SFI Specs 16.1, 16.2, 16.5, 16.6, 27.1, and 37.1.
New SFI Labels for Seatbelts/Nets

Please see the linked info below from SFI Foundation regarding the way driver restraints and window/roll cage nets are dated for SFI Specs 16.1, 16.2, 16.5, 16.6, 27.1, and 37.1.