Are you that type of person that likes to do it yourself? The KC Turbos DIY 6.0L Turbo Kit is for you. This kit allows you to build your own turbo with an upgraded cover, backing plate, and billet wheel. This will bolt right to any stock 6.0L turbo.
KC's GTX style billet wheel spool fast and make great top end power. This great upgrade for someone who wants to squeeze a little more power out of their turbo without having to buy or build a complete upgraded turbo. Just swap your stock parts with KC's billet wheel, cover, and backing plate and then you will be able to support up to 175cc injectors.
The 2005-2007 turbine wheel is slightly smaller than the 2004 and 2003 turbine wheel, this means that it spools faster but makes less power. The problem is that the smaller turbine wheel is not big enough to support the bigger 64.7mm compressor wheel. That is why KC does not recommend the 64.7mm compressor wheel on a 2005-2007 turbo. If you are after the 2003 whistle, then add the upgraded 10 blade turbine wheel to any 2004-2007 turbo(2003 turbos already come with a 10 blade turbine).