My car is stock 400, so a 3" exhaust doesn't create any power gains and I hate the way it looks and fits, especially at the rear. Yeah, back in the late 70's and early 80's headers plus turbos and turn down were the rage in my crowd. Exhaust fumes in the car sometimes happened, (early form of vaping) but we survived it. Also, back then we had actual exhaust shops that were run by men that knew how to design and fab really nice systems, now not so much.