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.

Don't know about more power but as soon as the Plymouth dealer used car salesman jumped in and started my first b-cuda with me standing behind, that car was SOLD!!! It was a 67 273 Commando with 4 speed and it really sounded nice.

I used to cruise around with the wheel covers off and the idle turned up a bit and all of a sudden, everybody wanted to race me from the stop lights.