I have my truck tore apart at the moment waiting on the heads to come back from the machine shop and I'm trying to decide how far I need to go on the fuel system for my 7.3. Where it sits right now I'm running 238/80's now and never plan on going bigger on the injectors, when the heads come back from the machine shop they will be decked .015, and bowls and runners will be cleaned up. Final horsepower goal is right around 600 which with pairing with the right turbo shouldn't too difficult. I just don't know how far I actually need to modify the fuel system. I will definitely have a home built regulated return but with the size of injector I have do I really need larger fuel lines from the tank up? When I first started looking at this project 3 years ago when I got the injectors my plans were for a dual super duty pumps but the more I get to thinking about it now and reading I think I want to do the fuel labs pump. Just trying to get some input from some guys that are running these type of larger injectors to see how you guys ran your systems and if your seeing any type of fuel pressure loss with the system you have now. Thanks for any help guys.