Ann: Market Update - New Products, page-3

Yes the Landcruisers are archaic but excluding them from mine sites would result in overloaded Hiluxs and rangers as they dont have the chasis strength or drive train strength/power of a Landcruiser

Pitty Ken Johnson the ex MD did not do more with this.

Anyway How could a big Hino use the same size brake as a hilux ? :

"Earlier releases of SIBS® brakes will continue to be supported, however all new orders for existing models including LandCruiser, Hilux, Isuzu and Hino will adopt the SIBS® 4 improvements from December 2014."