Im sure this has been discussed before but whats the most hp the stock rails can handle on an 03 gt. I went to get tuned today and my car is starving for fuel. I thought my cobra pumps kb bap and 55# injectors would be enough but it wasnt. Im getting a bigger line from the tank to rails, upgrading the wiring for the fuel pump and getting focus pumps. I just want to know if i need fuel rails or they can handle the power i expect to make which is about 540 550hp. Also where is the cheapest place to get fuel rails either aeromotive or cpr would be fine(if i need to get them)