How much for 2.5 dual exhaust on a Duster

what size engine?

2 1/4" should be good on most small blocks,
if the cam isn't radical, you would have more torque with the
2 1/4" sytem, I would think.

I paid $350 for my system installed,
not including the Mufflers, or chrome tips.

I am using Dynomax Super Turbos.

My idle is a little high as the car wasn't warmed up yet.

After almost a Minute, I thought to put the car in drive.

I will try to get another sound clip/video tommorow.

You can hear it here.

http://www.youtube.com/watch?v=Ud8mci4rjFU