#138391, "RE: 3inch Downpipe options for Hahn 16g turbo." In response to In response to 0
If you have a full custom exhaust, you're going to need a custom 3" downpipe to accommodate it. It is true what Hahn said, as the 420a platform continues to age, the more custom work will come into play.
Probably not what you want to read, but it is true.