I have the magnaflow straight through on my car and it sounds similar to a BWM. Not to loud, good performance and it isn't so eye catching as to attract attention from the fagolice. (I hate cops, have had nothing but bad expeirences and been absolved every time) SO go with the straight through magnaflow, I paid like 80 for mine, then cut the pipe off of the exhaust inlet end of the stock muffler. Then mocked everything up measured how much pipe i would need to weld up (maybe 3-4 inches) Had a muffler shop expand and cut some pipe and I welded it up with a flux core. Took me about 1/2 of day when I was in High School 5 years ago. GLCK