Anybody Ever Seen an NOS "Formula "S" Exhaust System?? Now With Pics!!

Steve, I still have the original factory exhaust on my Formula S. It has a muffler and resonator and yeah it is OLD. has a couple small holes on the over axle pipe. I also was reading that they did test with dual exhaust and found the design on the single made more power then with standard dual exhaust.


67 had the same setup Keith?? Just curious....funny too that they used single exhaust on the sb "S"