width modulated fuel pump

[timopajala]

So im gonna put ls3 from 2013 camaro in my 1967 camaro and just read that it has 1 line fuel system. I allready have return style lines in my car and tanks inc tank and pump on the car, will the normal pump work if i put regulator in the fuel line o does it mess things up? I do have the original tank from the 2013 camaro put i dont think that i can hook it to my current tank.