Just got done installing the exhaust in my 72. I used a stock replacement form Gardner Exhaust. It is perfect. I can't belive how well it fit. I'm used to installing Napa and Autozone replacement systems. No comparision to this system. It fits perfect in every spot. They only sell stock systems, aluminized inside and out including welds. It comes with all clamps and hangers, not crappy universal ones, these are just like the originals. The pipes are also wrapped in plastic, install and slide off the plastic, no fingerprints. If your looking to replace your system with an OEM stlye, check them out at www.gardnerexhaust.com . I'll take some pictures later this week, I should have it running by then and check out the sound. Almost forgot, they have 3 1970 Gran Sports including a GSX. They do know Buicks.
exhaust Karl - if you don't mind, what was your cost and did they offer a choice of mufflers? Do they offer an "X pipe" option? - Bill
My system was $495 including the original style clamps for the tailpipes. You can option out extras like jet coated flanges, stainless clamps and brackets for extra. No "X" pipes, only stock exhaust systems, not sure about muffler options.
