EDIT - SOLD
This is an almost new muffler - it was used for less than 500 miles while tuning a custom EFI on a 2.4L Type 4 engine.
It has an oxygen sensor bung welded in, so if you want, you can use a wide band air fuel ratio gauge to read your mixture for jetting, etc.
Really good shape otherwise. New, this one is $375 from Auto Atlanta - I'm asking $225.
http://www.autoatlanta.com/Porsche-Monza-M...PN-RTM2106.html