Ivia,, How much Nitrous do you plan on running? The reason is with normal upgrades you'll have somewere in the area of 275 HP and the TT injectors (370cc) running at 80% duty cycle well carry you up to 350 HP, but here's where you have to plan for the future, if you plan on going with more nitrous or a stroker or both the 370CC TT injectors won't be big enough. I'd suggest using the 555cc injectors that way you could go up to 500 HP without any problems. When you have the ECU upgraded just let it be known your running 555cc injectors. In the VG30DE engine you have the potential (approx.) of 1 HP for every cc of injector size. So TT 370cc injector's, 370 HP, 555cc injector's, 550 HP. You could make that much power with a 200 shot of Nitrous easily. With that much power and a good automatic with a 3,500 stall convertor you'd have to wear a neck brace on launching. The only thing you'd have make sure of is you run 92+ octane gas and when using Nitrous retard the ignition 6-8 degree's. That's why I said to make sure you get a dual program EPROM chip for you ECU with a switch.