Introduced for the T6 model, these kits can be used as an upgrade for the T5 setup. T5 Box (7H, 7E)[2004-2014]. T5 Bus (7H, 7E) [2004-2014]. T5 Platform/Chassis (7J, 7F) [2004-2014]. The aluminium spring disc has also been upgraded by utilising a forged aluminium material rather then the original cast giving them superior strength when compared to the OE part.