is hard to swap out the v8 for a 2jzgte in the gs400 and also what are all the parts im gonna need im new and i just need help

 

It's just as hard as swapping into the GS300. It's a little more involved. The extra things you have to focus on are the power steering lines and reservoir relocation and mating the GS4 harness to the GS3. Other than that, it's just like swapping into a GS300. Information is available. I recommend you prepare you're self by doing a **** load of research and planning. Good luck!