I have a dual out system which I need to replace the mufflers. I just want to replace the mufflers at this time, not the entire system from the down pipe. Which mufflers does everyone suggest. I bought the car with flowmasters already installed with 3" exhaust. My GN is an 87, with some head port and valve work, TE-44 turbo, Comp 206 cam, 50# injectors, and depending on the way I want to drive the car, I run anywhere between 10 to 20 psi on the boost. Thanks for your suggestions. (I'm not sure what series the FM's are).