As you know this is my overactive imagination trying to make my turd of a car sound interesting. As you may know, I pulled the 1 5/8" primary Sanderson shorty headers and 2.5" compact X pipe exhaust with Hooker Aerochamber mufflers off my 88 Cutlass, I had it on the 260, it actually brought the 260 on par with a good running 307 and sounded amazing and only slightly loud. I put That exhaust on my 70S, it just doesn't sound as good. I plan on putting back on the mileage machine, to make the power more respectable, should be even better now that has a 2004R instead of a TH350 and hopefully help mileage will be better as well. I will be including pictures of my 88 as I do body work on the car.