Well, I took this advice some months ago, and have tried to get by, but i'm at the point where the trouble code is staying on all the time. and now, my mileage is suffering. so, my question is, can anyone suggest the best aftermarket replacement scenario? and should i replace the entire system? manifold back? i'm thinking this is the cleanest approach. although the original muffler is still acceptable, the muffler to tail pipe connection is on it's last legs. open to suggestions on type and where to obtain a new exhaust system.

1999 SR5 V6 4WD
Addcos, Bilsteins, Detroit Truetrac, Amsoil, etc...