Injector- I think most are using 24lbs. The 3.0 comes with them stock and depending on the engine you get and the fuel system you have you might be able to use the ones it has. You would need to get an aftermarket MAF (Pro-M etc..)set for 24lbs injectors. Get either a APEXI SAFC like alot of the other 3.0 hybrids or a custom tuned chip.
With your intake I'd love to see what kind of numbers the engine puts down.