This is a recommended combination of parts including: Tii exhaust manifold. Down pipe is good but has a little surface rust in some areas. The muffler and center resonator for the 77-79 320i is BMW oem with BMW logo stamp . They are made from very durable steel casings with no surface rust. The resonator and muffler was installed 6 months before take off. This is a complete exhaust system and in excellent shape. It bolts together perfectly..
BMW mufflers sell for $111.25 new and the resonator is $80 new. I am asking $230 for everything plus shipping OBO. I live in Utah just outside SLC.