When I was still driving on the street with my '66 I had a single 2-1/2" pipe with z Magnaflow. It had a nice sound and the car went 12:20@110 on a 150 shot.

This car has had the big nitrous header in it with the 4" collector and turnout that Mike had built. It ran 103 on motor only and was LOUD! It had nothing below 4000 and that made it hard to dial.

I bought the pair of Clifford long tubes that are in it now and it usually runs 100, but will print time cards all day long. I have some 24" extensions on it. Makes it a little quieter inside the car, but still loud.

W