I dont even know where the factory locations are anymore. Honestly, it had cherry bombs when I got it and I put flow masters on it when I built my 351w. I assume it is under the rear seat and if so, the answer to your question is no but I am not doing a heidts kit either. If you go with heidts, you could probably put the mufflers under the rear seat and put turn downs on it. If you wanted to run all the way to the rear you could but you would have to run exhaust tube above the frame rails to clear the cross bars for the sway bar and the coilovers which means a small fuel cell and a lot of custom fabrication to build some trunk pans. It would take up a lot of space in the trunk and there doesnt seem to be any reason not to run it to the side.