I just checked a service manual that I have access to on line but it does not list or show the location of the regulator. Yes the car has one. If you look at any of the Vette after market vendors they offer kits for more HP and they alway include an adjustable fuel regulator to replace your stock one.
Going on a limb here I will say the regulator is near the back of the engine in the fuel feed to the injectors. It kinda looks like a turn signal (blinker) module.