Change input or output shafts

[JCutter]

Im looking for about 450 hp(TST comp, 100hp injectors, bigger turbo than the HY, DTT TC and VB and smart controler) maybe alittle less but around that. What shaft should i change? Do i even need to change it? Are they hard to change? Thanks for the input!

 

[Cummins4Life]

Both, the input is easier because you need a press to take the OD unit apart.



If you dont do 4x4launches, or use a lockup switch you may not need either. But its a good idea.