BigBlue5.4, I had the super 44 si/do on mine before and now have the roush offroad and now my ears don't feel like there plug up do to the drone. Roush offroad all the way!!! Also got a little bottom end torque back. Lost a little with the super 44 but in its defense did gain alittle on the upper end with flowmaster, the roush feels better through the whole rpm range.

 

I found some other vids on YouTube that sounded great, I have 40's on a 80 Z28 and i think i like teh sound of the 44 better. Im a 97 and they can run true dual also. Thats sound just makes a old man smile

 

and a young man too, I love my true's