I got 335 diffuser since 325/328/330 diffuser is on the far right. With non 335i cars there JUST enough space to make a 335 type exhaust without losing some valuable storage space.
The tips are 4"
The guy I go to for exhaust work does some really quality work. He was like "the left tip is sitting like 1/16" deeper than the other one, I'm gonna reweld it."
