So in trying to I.D. some old Q-Jets I have lying around I see one is a Quadra-Jet with CA regulations and the other is a Quadra-Jet with Federal regulations. What's the difference between the two? Would it be better power wise, all things being the same, to use the Federal one, or is it such a small difference that it doesn't matter? Keep in mind the car does not need to pass emissions due to how old it is. Thanks.