I would recommend the Timevalve stainless-steel replacement. On your car, I believe the pipe you need replaced is part of the rear muffler assembly (probably around $250):
If your muffler is still sound, I have found that local exhaust shops are more willing to make little repairs than the chains. It helps that it is a diesel -- they are less afraid to weld--won't insist you purchase the bolt-together assemblies. Cheers, Andrew Seidel.