I was seriously considering the Firefly pipes. Great reviews from all that took the time out to speak with me who has or had a pair. At the end I elected to go with the 3" by Performance Engineering. Baffles are on order and my pipes went out Monday. Some reasons is that the most notable performance gains as I was told were on the big, big horsepower engines. So I figured why spend twice as much for the same performance gains. There were many other upgrades that I'm doing to my car while my motor is out such as radiator and
oil cooler screens, Kirkham brake and clutch resevoirs, fan covers, 5 point harner, fire extinguisher. I wanted to stay with ceramic coating look instead of the stainless and did not want to coat stainless pipes. Most of all a very respected Superformance builder/dealer said I was just wasting money. I basically want the sound improvements and if I gain a few horsepower then that is just fine with me!