Fuel Tank Venting Question

I don't think so. No reason you could not modify the 73

This all depends on where the front vent line ends inside the tank .
Mine is up against the roof of the tank, I ran it up thru the floor of the trunk, up hi and put 2 coils in it and back down thru the trunk floor. No problems ! I also have the stock fill tube vent on mine too---------