[mickmate]

I have replaced quite a few now mostly with the Classic Chambered. Check his website as it has a good rundown on how we replace them, sound bytes, performance data etc. I usually use the 3" baffled at 21" long to give a clean cut on each end and I face the louvres toward the motor for a little more muffling. I think they have a deep and rumbly tone without being excessively loud for cruising, we can talk in the car. They do indeed make some noise when you get on it. The performance difference is phenomanal!