Ok, so I used the search function to look up on info on installing twice pipes, (ordered them and they're at my house). And I saw some different stuff, such as losing low end torque, and eventually they'll get insanely loud. I have a 1978 280z, so am I going to need to do any welding, and do you have any tips on trying to prevent the torque loss, or will it be made up for quickly, or what?