just for info value..
http://www.nzta.govt.nz/resources/virm-in-service-certification/docs/gen-7-vehicle-interior-v4a3.pdf
Table 7-1-1 on page 7-1-2
LVV certification is not required provided that:
the seat is either an unmodified OE seat from another vehicle or of a known and reputable aftermarket brand, and
– the seat is fitted to unmodified OE seat anchorages, and
– the seatbelt anchorage or operation is not affected, and
– the seat components (including brackets, runners and rails) are compatible with each other, ie they are either OE components from a production vehicle or of a known and reputable aftermarket brand, and are not fitted together by welding, and
– the relationship between seat, seat occupant, front airbag and location of the seatbelt anchorages is not affected.